Only got the 7.20 update over the weekend, and noticed that whereever I'd added a custom IQ data field to an activity layout it had either changed it to a different CIQ field or changed it to timer.
Not dug any further, and I've put back the fields that I wanted, but just a heads up to anyone to do a quick check.
I wonder if perhaps the update has removed / reordered the CIQ data fields in a table somewhere so it is getting confused.
No biggie though.