Hi Nick,
Thanks for the quick answer.
In my case I was able to solve my issue by modifying my script include and the way I call it.
To find cases where a user has more than X asset of a model, I needed to do a GlideAggregate call and use the addHaving function. So to be able to do that GlideAggregate call I needed to pass the query I wanted in the client script include so I was for example passing: install_status!=7^model_category=81feb9c137101000deeabfc8bcbe5dc4
During troubleshooting I found out that if a was passing a query that did not contain "^", it was working correctly with the group by. So my first thought was to encode "^" so to send "%5E" and in my script include I would decode it. This worked well for list but did not work in reports. I did some debugging and it seems like my script include was receiving the decoded version, also when saving the record the "%5E" was being decoded.
So for the moment, my workaround will be to use a custom character to replace "^" for the moment I chose to use "|" but other characters might do the job, the only issue would be with a character that you actually want to use in the query.
Then in my script include, I have the following script line to put back the "^" before doing my query.
encodedQuery = encodedQuery.replace(/\|/g, '^');
