My FEO told me to never write on my own certificate for any reason, if I'm buying guns/ammo then its written on by the person selling it.
I have a Martini Henry that was held under Section 7, but wanted it moved to Section 1 to shoot it. I sent the FAC in, after phoning to explain it all, and got the certificate back in a few days. Good service.
Entering reloads sounds like overreach.