Buy All Favourite With Collection

I have several collections. If a client has photos selected in "Favourites" then adds a collection and wants to add all the photos from the favourites to the collection (Add all favorites to Saphire Package HIGH RES?), it adds the same photo multiple times to the collection. 

For example, if the client chooses a collection with 5 photos included and has 5 different photos in their favourites it only adds the first favourites 5 times.

Is there a way to add a Buy all to collections? It would be a lot more intuitive to be able to order it from their favourites instead of adding a collection and the going back to the favourites to add to the collection.

It is something resolved for the next update (doesn't happen in all cases). I'll email you a file to upload that will keep it form happening.