Change Stock U/M to another one

Hi everyone,

For some new local tax regulations here in Mexico, government now ask us to use a stock of unit from a list they publish and its valid from Dec 17.

I check that its is possible to change stock UM in Sage and even in some related UIs once you do that those are changed automatically. I run reports and so on and everything was fine. In some UIs you need to manually do it as for example Price List. But dont found an issue. I dont delete old one, just leave there and factor it is the same in new one. But I can do it. Any problem could arise? Or any recommendation.

Thank you