Agree with Ken here.
Check what the law is and give them ONLY that info. Some chiefs may want a list of all your guns, copies of your LTC, etc. NOTHING requires that you give them this and I would NOT provide it.
You do NOT have to use the form either (nothing requires a form). A letter telling the info that IS required will suffice and probably be the way that I would go if I moved. Leaving blank spaces on forms may raise questions, where a letter with info won't.
Just remember that bureaucrats LOVE forms, lots of data (whether entitled or not), and make it look like filling everything out is Required . . . doesn't make it so!
Let me provide a semi-related example. New C&R FFL form asks for cc info and signature on it if you want to pay BATFE that way (I did it this way), then they tell you to make a copy and give to your CLEO. Why would my chief need my cc info?? So I filled out all EXCEPT CC INFO, made a copy for local chief, then finished the form for BATFE. I wrote "redacted" in each of the cc info blocks on the form I provided my local chief.