Iām interested in the answer of this, since iām actually planning to upgrade one of my customer NMS/NAC with the same version as mentioned here. Perhaps anyone could share his experience.
@Emanuel.
I do suggest though, it might perhaps be helpful to first upgrade the NAC from 4.4.x 32 bits to 5.x.x 32 bits before exporting the DB.
Then installed the NAC from scratch to 6.x 64 bits.
Have you try this way?
Regrads
Gradelain