Custom Ribbon modification

[leurne]

Hello all
I'm working on a template with lot of macro etc...
we have a customized Ribbon, but i don't understand how it's done because as soon as i save the file .dotm or docx, the customized ribbon disappear (and i still can see in option > customize Ribbon > add-ins and all the stuff but it's gray as it was deactivated...

Problem is: if i want to modify the template, as soon as i save it, i lose this customized ribbon...

I can find in the VBA code, what is the code used, but i can't find how to modify, or add this ribbon...

Do you have an idea?

I used also Custom UI Editor but, it's not exactly same...