Good News!
I just wanted to let you know that we have spoken with Informix onbar
development and they are writing a utility to do clean-up of their data
stored on storage managers.  They will be issuing the appropriate delete api
calls to ADSM so that ADSM will inactivate and expire the data.  If you are
familiar with how Oracle EBU does this with the EBUTOOL it will be similar.

This informix onbar tool is planned for this year, but I don't have a date
to offer you yet.
thanks,
Cyndie Behrens (IBM San Jose)