Hello!
You can perform this migration through ArcGIS Assistant Beta -> https://assistant.esri-ps.com/
Utilize the "Copy Item" option.

Then click on "Add Account" to include the Enterprise or Online account where you want to transfer the content.

Next, choose the target user, folder, and application title.
Click "Copy Item" and wait for the process to complete.
I hope this helps! Please note that this action is specific to the ArcGIS Assistant Beta; the classic version does not have this option for transferring applications from ArcGIS Online to ArcGIS Online.