Hi,
here in this topic:
http://www.gamesas.com/topic/1434234-mods-stability-save-games-thread-2/
it states:
Updating or uninstalling a mod which uses Skyrim's scripting system will cause no issues if the mod writer has coded it correctly.
http://www.gamesas.com/user/7890-andyw/ said:
My question is, what is really mandatory to not cause issues?
Why should I stop a script when updating when the new version will be used anyway?