Hello everyone,
I wanted to create a similar form as the one that Mr. @RezaDorrani presents in one of his videos: https://www.youtube.com/watch?v=hJQjGE-oUpM . So I wanted to leverage different attachment controls that end up in the same SharePoint list through SubmitForm() action. And this is what it looks like: 
The Submission worked perfectly and I was able to give the idea to my users that they were able to submit files in different windows while still having them all grouped up in one Sharepoint list item.
The problem and the question that I have is what if I want them to also edit this item with the attachments that they have submitted?
The app also has a gallery that fetches the records from my list and filters it by user.() When they choose the record they are redirected to the Form screen that is now on EditMode and not on NewMode and there they can see the attachments that they submitted for the specific item. So far so good, but when I am testing it and I make a change on the attachments (delete them, replace them etc.) and then hit the Submit button again, it won't work. Meaning the SubmitForm wont change the records neither in my App or in the Sharepoint list as I would expect it to (it doesn't override the existing record).
Any ideas why? And how I could resolve this? Because other than that the solution works perfectly for what I need.
Thank you for your time and thanks to Mr. Dorani for his video, I suggest you all watch it as it is very interesting.
