I did some due diligence looking for something on this topic, but did not find anything.
I tabbed a song using copy/paste from the suggested tab format into Word, but when I copy/paste back to submit, the odd symbols "\" blow up on me.
Any tips I should know about?
Ugh, I had this problem one time, but I don't really remember how I solved it.
Try opening the Word document with either Notepad or Wordpad.
I got it submitted by saving as html then editing within the submittal field.
There has to be an easier way.

Yeah, but I sure don't know it
After my last mistake, I just tab in notepad. Avoid Word at all cost!