Thanks for joining the thread, HollowayEmp.

When you use QuickBooks Attached Documents, an Attach folder is created and saved alongside the QuickBooks company file. The steps provided are for re-linking the Attached Documents to resolve the issue when you rename or relocate the company file. Since this breaks the connection between the Attached Documents and the company file.

As to copying the old attach folder(Inbox and TXN) contents into the newer attach folders, it will not merge both files. You can attach it again. However, we recommend our users to make a manual backup of the Attach folder which can be found in the same location as your QuickBooks company file before doing troubleshooting steps.

Then, to save a copy of an attached document to your desktop, just navigate to the Doc Center. You can also click the paperclip icon on the QuickBooks transaction or item. Once done, right-click and select Save Copy to Desktop. 

For additional reference, you can check this article to learn more about attaching files: QuickBooks Document Center: FAQs and common issues. This includes troubleshooting steps for common issues like missing attached documents, issues with scanning or attaching documents, or being unable to email transactions or send forms.

Know that our door is open 24/7 if you need assistance performing specific tasks in QuickBooks. You can also utilize the REPLY button below if you have any additional questions about moving the file and attachments.