https://www.icyphoenix.com/viewtopic.php?f=2&t=9609&p=60597#p60597
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Mighty Gorgon
Sat 30 Jul, 2016 23:13

Re: Integramod And Icy Phoenix Questions
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As far as I remember (I was a admin at IntegraMOD few years ago as well...) IntegraMOD didn't amend original DB structure of phpBB and its mod like Icy Phoenix does, so everything should work fine if you run the upgrade.

There also a cleanup tool to remove all unused files and db tables... but those should be tested on a backup first to make sure you won't miss anything important.