TitleINTERNAL: There are two Web Part galleries in the SP Ribbon
CauseThe Web Parts were never uninstalled from the Source environment prior to the DB dettach.
Run the attached PowerShell script in the customer's environment (Dev may need to be on the WebEx/call as the script may need to be tweaked if any errors are populated).
The PowerShell script needs to be run on any WFE (launch PS as an Administrator). The script will remove the Web Parts from the old Quest Web Parts gallery, deactivate and reactivate the QuickApps feature, and should place all the Web Parts in the correct QuickApps for SharePoint gallery.