How do I breakdown a kit into it's component parts

I have a use case where I purchase a product as a kit and then do a journal to sell the individual parts.

Currently we are doing a BOM Journal to split the kit into the individual products.

Unfortunately when looking at the demand history BOM Journals are not counted therefore the usage of the kit is not tracked and therefore I cannot do any forecasting for the kit.

Production orders do not allow me to put a negative quantity for the BOM.