Your Live progress has not been affected by what happens on the PTB.
patch 4.0.0 is just a hotfix.
The Clown does no longer slow himself down after throwing a bottle...
Thats all the balance changes? Seriously? No perk changes, no buffs for Trapper, Pig, Legion, no new features for the game itself (as iti is with no DLC, only default characters)? No closing the gap between solos and swf? No mori changes?
I know, Pyramid Head, canonic Killer, mysterious Survivor and so on... But without them and graphical improvements the whole patch 4.0.0 seems to be no more than just a hotfix. Although, they fixed the bag causing dying Survivors to be completely silent, yeeeaaaah.