Hi,

thanks for your plugin addcolumninlist, it really helped me a lot, but unfortunately I have a very annoying problem.
I slightly modified and simplified the plugin because I just wanted to add the "location" column to the products listing in the back office. It works just fine. Displaying and filtering looks good.
However when the filtering results in many rows and i want to click on the next page, the filtering is gone. It turns to the second page but deletes my custom "location" filtering and then displays all products instead.

I'll attach my version of the plugin. I would highly appreciate your help!!!

Thanks in advance!
addcolumninlist_modified.zip