Hi LBInteriors,
Thanks for posting your concern in the forum.
I'm sorry to hear about your data not matching the report. In my understanding, you are trying to compare the values from the GST Detailed report to the Business Activity statement. If this is the case, you will need to make sure that the activity fields are set correctly.
I recommend reading this article, Get Ready to Lodge Activity Statements. This will provide information about setting up your BAS fields.
If I misunderstood your question, feel free to clarify your concern and add relevant information and screenshots.
Let us know if you require any further assistance.
Thanks,
Genreve