@Tod ********

Ah, I think you're right!

I also submitted app for retirement extension today. I had 30 day visa exempt stamp in March - no extension- then on amnesty. My visit went better than yours, although waited 4 hours to get to desk C1. They did not mention a home visit but did ask for my phone number. I'm due to go back on the 25th for result. No stamps in passport today, just a receipt that looks like the one you posted.

Ok, thanks