Hi @frank42
I have been in the process of getting my digital library added to my collections and this is now complete. I then wanted to get my phsyical library added too. Like yourself, I also use ‘My Movies’ to track my collection as it’s nice and simple to scan the barcode and build the collection.
As @justin said, the relitively new import utility doesn’t support adding to Collections yet, only the Watchlist but i’m hoping this feature will be available soon! You can use the API as Justin stated and I’ve managed to do this with my exported collection from ‘My Movies’ that gives you a CSV output.
I used this utility to import my CSV which was fairly straight forward to do. After following the setup to get the Python script running and the config for my Trakt API, I just needed to modify my exported CSV to tidy it up a little and end up with a long list of IMDB IDs in the format the utility can read in. I then used the import utility script to add the CSV items to the ‘collection’ list on Trakt instead of the ‘watchlist’ list and everything is now added as a collection item 