It's very frustrating to go through a loan modification and the mortgage company keeps asking you for the same documentation over and over.
Make sure and send the documents (even multiple times) to them. Document everything you send them and keep physical and digital copies.
You can use manilla folders to physically store your documentation, and you can use your computer and the cloud (Google drive, Dropbox, etc) to store the digital copies.
Check out the video above to learn more about this.
Hope this is helpful to you!