In my form, users should be able to select a document to upload and a corresponding document type, which they will pick from a drop-down. I'd like them to be able to upload multiple document-doctype pairs at once using a collection. However, I'll need to split out the document types (which by default are all listed in one field since it's submitted in a collection).

My plan for this is to:

1. Record the ID of the Forms instance on each document that's submitted, and use that to find all the docs that were submitted through that instance
2. Order those search results by Entry ID, ascending...
3. so that I can cycle through each entry ID, incrementing an index value each time, so I can match each document to its correct document type

My questions regarding this process are:

1. This process breaks unless the documents in a collection are submitted in the same order every time. Can I always be sure they will hit the repository in the same order?
2. Is this too complicated? Is there an easier way of accomplishing my goal, that I'm not seeing? This is a format that we'll likely be using a lot in the future, so it needs to be airtight.

Thanks!