I just wanted to add this as a refresher since the thread I found this on was about 1 year old and figured posting it on a fresh thread might help people looking for an answer.
If you have the textured build plate and are now finding that your prints are not sticking, I can confirm that the use of a #0000 Steel Wool Pad and some IPA works outstandingly well.
I was having a problem where nothing would stay on the plate except the the initial test line at the front of the plate. I tried Dawn Dish Soap, IPA, cleaning with a Scotch Brite… EVERYTHING.
But one quick light scrub with a #0000 Steel Wool pad and using 99% IPA as the lubricant and bingo, everything is coming out perfect again.
There was no need for glue sticks, hairspray, or other things.
This tip comes thanks to this thread: New P1S Combo - nothing properly sticks to the build plate anymore