I have in plan to upgrade a UCCX 7 system to 8 and my concern is weather custom build reports are migrated also. I know you can build custom reports in version 8 as well. In fact, what I don't know is if during the upgrading process from SQl to Informix DB keeps the custom stored procedures build especially for the reports. And if so, will the reports still be functional? Same tables, same DB schema etc. And also could they use the same templates we created in Crystal reports or not.
I've not verified this myself yet, but I would strongly suspect that it would not.
It's likely that your MSSQL SPs will require some editing so that Informix can use them (there are dedicated tools out there for this job, but even they don't claim to do this automatically 100% of the time) and that's not something Cisco will be helping you with very much.