Copy entry from one keepass file to another

from:  https://superuser.com/questions/1440722/copy-entry-from-one-keepass-file-to-another

 

replicated below

 

You can use instead the top menu, or the keyboard shortcuts CtrlShiftC / CtrlShiftV. Make sure you do the paste operation before the clipboard timer expires. 

 

If you get this message while copying the entry, this is probably because the corresponding policy is disabled:

This operation is disallowed by the application policy. Ask your administrator to allow this operation.

The following policy flag is required:

Copy Whole Entries.