How do you say "Use THIS DB as root for links" in DTP?

So I copied ALL my groups from a buggy DB into a freshly created one. (This, IT SEEMS SO FAR, has fixed the problem where DTP constantly forgets the previous size and position of every window, so that I had to resize from a maxed-out window on the far-right of my screen EVERY time I opened one.)

Anyway … now I’ve got a new problem: the `x-devonthink-item’ links no longer work. They’re looking for their targets in the old, buggy database.

But the paths in the fresh DB are all the same: all the old hierarchies have been kept intact. How to I tell DTP to use the new DB as root, and not the bad one, which I’ve moved onto an external HD?

Otherwise, solution (3) from http://www.devon-technologies.com/scripts/userforum/viewtopic.php?f=3&t=8533#p42394, which seems good so far, cannot be used!

The copied items no longer have the same UUID as their counterparts in the original database.

Copying an item to a different database will not ‘carry over’ any existing Item Link to that item.

However, I have successfully moved a previously linked item to a different database using the ‘Move To’ command. The link now referred to (and found) that document in its new location.