Hi, if I want to add symbols_to_index to a collection, do I have to create a new collection in order to do so? Can I update an existing collection with these values in some way? If not, do I have to reimport all the products into the new collection or can I in some way import data from the original collection?

It's not possible to update an existing collection to support symbols_to_index. You have to create a new collection and reimport.

Thanks, and there isn't a way to copy over the data from one collection to the next right?

You have to export and reimport.

Thanks