Uppgrade from SP4 to SP6
I will advice you to uppgrade to SP6 before you start your archiving project. I can't tell you why, I'm just refering advices given by Baan.
I have done an archiving project on SP6, and we didn't have any problems at all.
My knowledge regarding SP6 is from Norwegian Baan customers, and I do think that most of them have done an uppgrade to SP6, and they are pleased with it.
One and a half year ago I did a migration project from IVb to IVc, and the plan was to install SP4. We did, tested and decided to go for SP5 (that was a misstake) because of to many bugs in SP4. At last, we ended at SP6, and it worked exelent.
My advice is:
1) Install SP6,