I am hoping someone might suggest an approach or workaround to meet these requirements. Last year,we used a long form with multiple subforms to have users upload various documents. This didn't work so well as in the midst of uploading various documents user would sometimes forget to add a field or two and when the form was validated the entire content of the form would get wiped out if any error existed. This caused many headaches that I am hoping to avoid now. 

So I thought I would approach this more sequentially and break out the upload of different types of documents into various pages. Unfortunately, stateless forms do not support uploads so I am forced to use multiple regular forms. The issue is how do I get users to go back and forth between the pages as though they're all connected? Since I can't really customize buttons to have a "previous" button in a regular form this leaves me lacking a navigational mechanism. I have thought about creating a piece of text and "styling" it to look like a button but this is sort of confusing since I can't remove the standard buttons and so it leaves me with two sets of buttons. Has anyone run into a similar issue and have potential workarounds that they used to address the issue? 

Any thoughts would be greatly appreciated.

Best,

John