I'll tell you what i did and in the order i did them and let you know how this went about, the softwares involved are IPB2, VB3.5beta3, PP5.13... the end result was a complete nightmare after hitting a scan database
I had integrated PP with IPB2 for some time and all was working well, i had a vb
licence spare so i imported all my users/posts etc from IPB via Impex into the new vb
3.5 beta, all ok... then after various tests/setups for vb
, usergroups etc.. it all funtioned rather well...
then i needed to integrate PP into the new beta ( i know it's not supported yet ) i got the new header file which Omegatron had done and planned ahead...
all went ok, really...all working ok... i had a bit of phpmyadmin fiddling to do but it was all ok... then a user on my vb
forums said he had no PM's..weird so stupidly i ran a scan db in the gallery to : "Check here to resync photo/comments usernames/update comments counts"..why? i dunno... anyways somewhere during my conversion process, i'm not sure where, user i'd's had been mixed up (i think) when the scan db was done i found usernames in the gallery had been replaced or removed (but their gallery remained)...ooh the fun of it all....
and the moral is ?
ALWAYS DO A BACKUP OF YOUR DATABASE! phew!