I currently converted a server from 4.2 to 6.5. I have an old SBACKUP
from my old 4.2 server.

Can I restore files from this backup to the new 6.5 server?

I have tried to restore some files but am getting the following error:

(SBACKUP-4.20 -539) SBACKUP cannot open the data aset for restore:
(TSAFS.NLM 6.50.11 282) The data set handel is invalid.