This past weekend I did an upgrade from Threads 6.4.4 to 6.5.5 then right to 7.1.

Everything went smoothly, except all my users are complaining that all their deleted PMs from the past 3 years have suddenly reappeared. I'm quite surprised myself to see my PMs since January 2004 reappear.

Note that I was previously on 6.2.1, more than a year ago, so what's the deal here. These PMs were never actually deleted after all this time?

Matt
Psi Prime, Inc.

This is completely normal... This is the side effect of importing PM's...

Basically, there are 2 users to every PM, when one user deletes the PM it is still in the other users inbox. When importing it has to link the pm to its owners.

So, in order for PM's to be imported, they had to link all existing pm's to their owners, so any pm's that where in either users inbox will again show for both users.