diff --git a/src/components/expansion/ExpansionPanel.svelte b/src/components/expansion/ExpansionPanel.svelte
index 7be82f2a3d..5d80ab7346 100644
--- a/src/components/expansion/ExpansionPanel.svelte
+++ b/src/components/expansion/ExpansionPanel.svelte
@@ -169,8 +169,7 @@
     }
 
     if (expandedResult !== null) {
-      // TODO: remove this after expansion runs are made to work in new workspaces
-      // await effects.sendSequenceToWorkspace(sequence, expandedResult, user);
+      await effects.sendSequenceToWorkspace(sequence, expandedResult, user);
     }
   }
 
diff --git a/src/components/modals/ExpansionPanelModal.svelte b/src/components/modals/ExpansionPanelModal.svelte
index c7fdeea8f0..1ff4ee8044 100644
--- a/src/components/modals/ExpansionPanelModal.svelte
+++ b/src/components/modals/ExpansionPanelModal.svelte
@@ -4,9 +4,7 @@
   import { Label, Select } from '@nasa-jpl/stellar-svelte';
   import { createEventDispatcher } from 'svelte';
   import { field } from '../../stores/form';
-  import { parcels } from '../../stores/sequencing';
   import { workspaces } from '../../stores/workspaces';
-  import type { Parcel } from '../../types/sequencing';
   import type { Workspace } from '../../types/workspace';
   import { min } from '../../utilities/validators';
   import Field from '../form/Field.svelte';
@@ -20,24 +18,24 @@
 
   const dispatch = createEventDispatcher<{
     close: void;
-    save: { parcelId: number; workspaceId: number };
+    save: { workspaceId: number; workspaceName: string };
   }>();
 
   let workspaceIdField = field<number>(-1, [min(1, 'Field is required')]);
+  let workspaceIdFieldName: string;
   let selectedWorkspace: Workspace | undefined;
 
-  let parcelIdField = field<number>(-1, [min(1, 'Field is required')]);
-  let selectedParcel: Parcel | undefined;
-
   let saveButtonDisabled: boolean = true;
 
-  $: saveButtonDisabled = $workspaceIdField.value === -1 || $parcelIdField.value === -1;
+  $: saveButtonDisabled = $workspaceIdField.value === -1;
   $: selectedWorkspace = $workspaces.find(({ id }) => $workspaceIdField.value === id);
-  $: selectedParcel = $parcels.find(({ id }) => $parcelIdField.value === id);
+  $: if ($workspaceIdField.value) {
+    workspaceIdFieldName = $workspaces.find(workspace => workspace.id === $workspaceIdField.value)?.name ?? '';
+  }
 
   function save() {
     if (!saveButtonDisabled) {
-      dispatch('save', { parcelId: $parcelIdField.value, workspaceId: $workspaceIdField.value });
+      dispatch('save', { workspaceId: $workspaceIdField.value, workspaceName: workspaceIdFieldName });
     }
   }
 
@@ -55,13 +53,6 @@
     }
     return `${workspace.name} (${workspace.id})`;
   }
-
-  function getDisplayNameForParcel(parcel?: Parcel) {
-    if (!parcel) {
-      return '';
-    }
-    return `${parcel.name} (${parcel.id})`;
-  }
 </script>
 
 <svelte:window on:keydown={onKeydown} />
@@ -97,23 +88,6 @@
           <Select.Input type="number" name="workspace-id" aria-label="Select Workspace hidden input" />
         </Select.Root>
       </Field>
-      <Field field={parcelIdField}>
-        <Label size="sm" for="parcel-id" class="pb-0.5">Parcel Id</Label>
-        <Select.Root selected={{ label: getDisplayNameForParcel(selectedParcel), value: selectedParcel?.id ?? '' }}>
-          <Select.Trigger class="min-w-[124px]" value={selectedParcel?.id} size="xs" aria-labelledby={null}>
-            <Select.Value aria-label="Select a parcel" placeholder="Select a parcel" />
-          </Select.Trigger>
-          <Select.Content class="z-[10000]">
-            {#each $parcels as parcel}
-              <Select.Item size="xs" value={parcel.id} label={getDisplayNameForParcel(parcel)} class="flex gap-1">
-                {parcel.name}
-                <div class="whitespace-nowrap text-muted-foreground">(Id: {parcel.id})</div>
-              </Select.Item>
-            {/each}
-          </Select.Content>
-          <Select.Input type="number" name="parcel-id" aria-label="Select Parcel hidden input" />
-        </Select.Root>
-      </Field>
     </fieldset>
   </ModalContent>
 
diff --git a/src/utilities/effects.ts b/src/utilities/effects.ts
index 79bead0d75..336f4792e7 100644
--- a/src/utilities/effects.ts
+++ b/src/utilities/effects.ts
@@ -264,6 +264,7 @@ import {
   showDeleteExternalEventSourceTypeModal,
   showDeleteExternalSourceModal,
   showEditViewModal,
+  showExpansionPanelModal,
   showImportWorkspaceFileModal,
   showLibrarySequenceModel,
   showManagePlanConstraintsModal,
@@ -6805,45 +6806,60 @@ const effects = {
     }
   },
 
-  // TODO: remove this after expansion runs are made to work in new workspaces
-  // async sendSequenceToWorkspace(
-  //   sequence: ExpansionSequence | null,
-  //   expandedSequence: string | null,
-  //   user: User | null,
-  // ): Promise<void> {
-  //   if (sequence === null) {
-  //     showFailureToast("Sequence Doesn't Exist");
-  //     return;
-  //   }
+  async sendSequenceToWorkspace(
+    sequence: ExpansionSequence | null,
+    expandedSequence: string | null,
+    user: User | null,
+  ): Promise<string | null> {
+    try {
+      if (sequence === null) {
+        throw new Error("Sequence Doesn't Exist");
+      }
+      if (expandedSequence === null) {
+        throw new Error("Expanded Sequence Doesn't Exist");
+      }
 
-  //   if (expandedSequence === null) {
-  //     showFailureToast("Expanded Sequence Doesn't Exist");
-  //     return;
-  //   }
+      const { confirm: confirmWorkspace, value: valueWorkspace } = await showExpansionPanelModal();
 
-  //   const { confirm, value } = await showExpansionPanelModal();
+      if (!confirmWorkspace || !valueWorkspace) {
+        throw new Error('Unable To Find The Specified Workspace');
+      }
 
-  //   if (!confirm || !value) {
-  //     return;
-  //   }
+      const { workspaceId, workspaceName } = valueWorkspace;
 
-  //   try {
-  //     const createUserSequenceInsertInput: UserSequenceInsertInput = {
-  //       definition: expandedSequence,
-  //       is_locked: false,
-  //       name: sequence.seq_id,
-  //       parcel_id: value.parcelId,
-  //       seq_json: '',
-  //       workspace_id: value.workspaceId,
-  //     };
-  //     const userSequenceCreated = await this.createUserSequence(createUserSequenceInsertInput, user);
-  //     if (!userSequenceCreated) {
-  //       throw Error('Sequence Import Failed');
-  //     }
-  //   } catch (e) {
-  //     catchError(e as Error);
-  //   }
-  // },
+      const workspaceContents = await effects.getWorkspaceContents(workspaceId, user);
+      if (!workspaceContents) {
+        throw new Error('Unable To Find The Specified Workspace');
+      }
+
+      const workspaceTree: WorkspaceTreeNode = {
+        contents: workspaceContents,
+        name: workspaceName,
+        type: WorkspaceContentType.Workspace,
+      };
+      workspaceTree;
+
+      const { confirm: confirmNewFile, value: confirmNewFileValue } = await showNewWorkspaceSequenceModal(
+        workspaceId,
+        workspaceTree,
+        '',
+        user,
+      );
+
+      if (confirmNewFile && confirmNewFileValue) {
+        const { filePath: newFilePath } = confirmNewFileValue;
+        const body = createWorkspaceSequenceFileFormData(newFilePath, expandedSequence);
+        await reqWorkspace<Workspace>(`${workspaceId}/${newFilePath}?type=file`, 'PUT', body, user, undefined, false);
+        showSuccessToast('Workspace File Created Successfully');
+      } else {
+        throw new Error('Workspace File Creation Failed');
+      }
+    } catch (e) {
+      catchError('Workspace file was unable to be created', e as Error);
+      showFailureToast('Workspace File Creation Failed');
+    }
+    return null;
+  },
 
   async session(user: BaseUser | null): Promise<ReqSessionResponse> {
     try {
diff --git a/src/utilities/modal.ts b/src/utilities/modal.ts
index f7af4b679f..d00273c3fe 100644
--- a/src/utilities/modal.ts
+++ b/src/utilities/modal.ts
@@ -1570,7 +1570,7 @@ export async function showExpansionPanelModal(): Promise<ModalElementValue> {
           expansionPanelModal.$destroy();
         });
 
-        expansionPanelModal.$on('save', (e: CustomEvent<{ parcelId: number; workspaceId: number }>) => {
+        expansionPanelModal.$on('save', (e: CustomEvent<{ workspaceId: number }>) => {
           target.replaceChildren();
           target.resolve = null;
           resolve({ confirm: true, value: e.detail });