Acids with an expiration interval need to have the interval replaced with a 0, so that they do not expire.
Before upgrading run TSSCFILE with TSS LIST(ACIDS) DATA(PASS).
Look at the record type 3000. If the record is blank then the acid has a non-expiring password (no password interval). If it is not blank then the acid needs to have the password interval replaced:
TSS REPLACE(acid) PASS(*, 0)
The * will keep the current password.