It is not so simple as you might think:
You could have convinced me with just two lines of code.
I was just fishing for a quick 'n dirty solution to the immediate problem. If and when the ability to attach/detach episodes (i.e., convert movie records to episodes and vice versa) is added to the program, this should be considered as a complimentary program function. That is, a
Movie menu item to create series with X seasons each with Y episodes. There would then be a number of different ways to create series records in situations where there is no online source.
In the meantime, the best solution to the problem at hand depends on which aspect is more important: (1) creating episode records and attaching files to them (possibly capturing
Title and
Year in the process), or (2) importing other information about each episode. Unfortunately, both are not possible.
If (1), I would manually create the 126 episode records using
New Episode (tedious, but it would only take a few minutes). I would change the filenames to include
Episode title and
Year, if they didn't already, and then run the file scanner to attach the files and add this information.
If (2), I would abandon the idea of recording these episodes as a series, and import them as movie records instead. Doing so allows
any available information to be imported using the CSV or Excel import plugins. See
this post for more about how to do this.