I once tried running ANZOBJCVN again but that won't work again if you
you've already upgraded to 6.1 or 7.1. I suspect it will be pretty much
dormant until when IBM needs it again, if ever.
You may want to check out a homegrown version of ANZOBJCVN available at
It may not be flawless, but it's a start.
I'm not sure on the logic that insists the target release be greater than
V5R1. IBM tells me that the target release is not so important as the
compiler level. Somewhere I read that anything compiled under V5R1 or
above, irregardless of target release, or whether or not it had
observability will be ok. The real culprits were items compiled by a
compiler prior to V5R1 with observability removed. Apparently there's
enough 'stuff' in there, even with observability removed, at V5R1 and
above that conversion processes ok.