that way it should re-populate the TVDB Series ID field, and might fix automatic batch lookups for the other files.
It does. In fact, CSI was the series I was using as a tester when agitating for that feature way back in the day.
The [theTVDB Series ID] field is a relational field keyed off of [Series]. This just means that if you fill [theTVDB Series ID] for
one file in a particular series, it has the effect of filling that field for ALL files in that particular series. And naturally, this field gets filled when you do a Get Movie & TV Info lookup on an episode of a TV Show.
When you do a Get Movie & TV Info lookup on any TV Show file, if [theTVDB Series ID] is non-empty, then the search uses [theTVDB Series ID] to do the search
instead of the [Series] name. So:
0. Make sure your CSI files have [Series] set the way you want it to be (such as [Series]=CSI)
1. Select one CSI file and, by itself, do the Get Movie & TV Info.
2. Manually select the proper entry (you can change the search if needed).
3. Apply the changes.
4. Now, the TVDB Series ID field will be filled for all files where [Series]=CSI, and will automatically be used for any future lookups (whether batch or single-file).
You can keep [Series] tagged however you prefer. It doesn't matter if you prefer to label CSI in your Library [Series]="Grissom's Plucky Adventure Team". As long as all of them are tagged that way, and one of them has been "fixed" by tagging [theTVDB Series ID] then the lookups will work just fine.