Hi again Colin,
I have checked the earlier version on Joomla that I still have running on another XAMPP server and I realized that before migrating to J3x I had unistalled JD so right now I do not even know what the latest release of JD I had installed was. I would say that it was prior than 2011.... As for the the categories that I have, we're talking about 12 categories, some 37 files. As for the added info, some text mainly.
I didn't follow those guidelines you mention. I did what the Joomla 1.5 to 3x migration guide suggested, to unistall all the old extensions before the migration. I thought that was enough with the idea of reinstalling the newest release once J3.x was in place (which of course meant reconstructing the categories by hand....)
Looking at the J1.5 database I can see that there still old JD tables there. So the unistall procedure didn't actually deleted them and I migrated those tables in J3x. ....hum...what if I unistall the latest JD in J3.9, delete any tables still existing and reinstall JD3.2 again? Can this sort the problem out?
Any help appreciated