Casual gains

I have found something strange doing a CIBSE heat gain calculation, when we set up the rooms, if you set them to standard, it adds a casual gain depending on type of room (e.g. office, waiting room, etc).
However, casual gains seemed very high on the final calculation. Trying to troubleshoot it, I set them manually to 0 in "room data", inside of cad input.
I then re-run the  CIBSE heat gain calculation, and I still get casual gains, which seem more inline with what you'd get using rules of thumbs (w/m for lighting, computers, and people).
Do you know why this would happen?
Thank you.
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