This is a work around that I actually leverage quite a bit. The two ways I see around doing what you are presenting is a) using something like fusion to watch for those fields to be changed and using fusion to unwind the changes, or b) not using those fields on other forms.

Nick, glad you got it working!   For future readers, I mistyped the formula, there was an extra semicolon in the beginning. It should have looked like this.  

If you pass the string thru a split(;{your field};;), then it should give you an array, then you should be able to map it directly. Note, put the semicolon you want to use for the split in before anything else, or fusion will think it's part of the code and it won't work. (There shouldn't be the gre...

Nick   I'm not sure why you need to change the WF field to a text field? You can have a dropdown be multiselect in Workfront, or you could use a checkbox field as well.

The easiest way is to leverage the misc. action module for your issue, and select "assign" or "assign multiple", whichever you are trying to do, then map in your assignment and your user you want to assign.

Include accessRules in the "fields" portion of your query.

The file Type parameter is on the version object, so if you include currentVersion:ext, that should give it to you.

A document can only exist on a single task at any one time as far as I'm aware, but you could for sure leverage fusion to move documents from one task to the next as required.

No worries, glad you figured it out!

If it's in the body then you shouldn't need to escape it, are you sure that's the name?