How to handle Echo Ridge Romance Series

[Lieke]

There is a series of novella's by 5 authors set in Echo Ridge.

This series contains 4 anthologies and all the novella's in these anthologies:
https://www.goodreads.com/series/1932...

And there are three series for the books from one of the authors:
https://www.goodreads.com/series/2291...
https://www.goodreads.com/series/2291...
https://www.goodreads.com/series/2427...
Two of the series contain an extra book compared with the original anthologies.

What would be the right way to handle this series?
Before I change everything in the wrong way ;)