Will the running of the Membership Utility report overwrite manual changes to memberships?
Unknown said: Will the running of the Membership Utility report overwrite manual changes to memberships?
Unless the status has been manually changed, I think the answer is no: a look at the underlying stored procedure (AP_MEMBERSHIP_UPDATE) reveals great attention to changing status (pending to active, active to lapsed, etc.), and nothing else.
As of v12 (I think) this report has a Preview Mode, which you may find useful if you're wondering what the report is going to do when it next runs overnight, for example.
If you haven't already seen it, there's a diagram in the documentation for the Membership Update Utility (look under Utility Processing Summary,) that details exactly how it updates membership statuses. I'm not sure if that helps answer your question at all but I've found it useful when trying to understand the specifics myself.