prevent attachment column updates when importing budibase templates

packages/server/src/api/controllers/application.ts

@@ -153,7 +153,11 @@ async function createInstance(appId: string, template: AppTemplate) {
   await createAllSearchIndex()
 
   if (template && template.useTemplate) {
-    await sdk.backups.importApp(appId, db, template)
+    const opts = {
+      importObjStoreContents: true,
+      updateAttachmentColumns: !template.key, // preserve attachments when using Budibase templates
+    }
+    await sdk.backups.importApp(appId, db, template, opts)
   } else {
     // create the users table
     await db.put(USERS_TABLE_SCHEMA)

packages/server/src/sdk/app/backups/imports.ts

@@ -170,7 +170,10 @@ export async function importApp(
   appId: string,
   db: Database,
   template: TemplateType,
-  opts: { importObjStoreContents: boolean } = { importObjStoreContents: true }
+  opts: {
+    importObjStoreContents: boolean
+    updateAttachmentColumns?: boolean
+  } = { importObjStoreContents: true, updateAttachmentColumns: true }
 ) {
   let prodAppId = dbCore.getProdAppID(appId)
   let dbStream: any
@@ -219,7 +222,9 @@ export async function importApp(
   if (!ok) {
     throw "Error loading database dump from template."
   }
-  await updateAttachmentColumns(prodAppId, db)
+  if (opts.updateAttachmentColumns) {
+    await updateAttachmentColumns(prodAppId, db)
+  }
   await updateAutomations(prodAppId, db)
   // clear up afterward
   if (tmpPath) {