Permanently saved user property in BOM

Hi, I have a problem with the BOM user parameter. The thing is that when I create my own user property in the BOM in the attributes and add it to the BOM in the 2D drawing, it is displayed. Then I save the BOM as a template. So far everything is fine. But when I create a new part and insert the BOM I saved there with my own defined property, it is no longer displayed (user property) and saved. Any ideas how to do it or where is the mistake? I made a video of this issue - bom_issues - TechSmith Screencast

Thanks!

Is the User Attribute Part of your Part Template?
If not, it cannot be displayed from a new part.
Edit your Part Template by adding the User Attrib and Save.

Cheers - Paul

Thanks for your respond.
Yes, i have User Attribute saved in Part Template. You can see it in the video attached in my post. Problem is, that i donĀ“t how to save it permanently in 2D BOM template.