If it doesn't overwrite existing Tags,then it's good for me.
So my Movie names (Name Tag Field) will not be overwritten,then?
Correct.
There is one exception to this regarding the [Name] tag particularly. The Auto-Metadata Tagger
will overwrite the [Name] tag for files where [Media Sub Type] = TV Show, and [Series], [Season], and [Episode] are all filled with valid data at import time.
That's necessary because [Name] always gets filled with something at import (if nothing else, the filename of the imported file). So, if you didn't have that exception, then the Auto-Metadata system would never be able to lookup the [Name] tag for anything.
For TV Shows, we all discussed it and agreed that it was worth doing because most imports don't come in with good data here anyway, and otherwise there would be no way for the Automated system to EVER write to the [Name] tag.
For any other [Media Sub Types], [Name] is
never written by the automated system, because it always contains something at import-time.