Teambuilder update INSIDE of online dynasty

i've heard about this, and tried all the tricks... This can't work for a couple reasons, which makes me think most of the people who've done this have got to be mistaken in if they've made the changes on their team or what...  Main reason i think it can't work is that you could potentially corrupt the teams roster setup, which is created in the teams file upon creation with no actual roster file saved on your device...  Hypothetically the team could get corrupted in Dynasty upon changing your helmet/ jersey color w/e and then changing the ratings on your players, then submitting.  Imagine the chaos that would happen on your dynasty file if the update for that team was pushed thru... I get that the logos and etc have changed for people, but i've never seen proof posted, nor have had any success with it first hand , and i've created over 20 teams and updated the eff outta all of them with dynasties active... never seen this even in the ancient PC versions of madden.  If i made a uni change, in dynasty it was set in stone.. both then AND now