Is it possible to change GL product group yourself?

I am selling Autoparts and Amazon constantly list them under 'Industrial & Scientific' instead of 'Car and Motorbike'

This problem is very troublesome and creates all kinds of issues with discoverability and editing.....

I use category specific file uploads to add products but it makes no difference.

My question is can anyone tell me if there is a way firstly to tell which category an asin is in using a report or downloaded file from amazon......

Second question is how do I change the 'gl_product_group' attribute?