Foreclosure on Homesearch.com

[Vic G.]

This is in Pennsylvania. 

There is a foreclosure property for auction on homesearch.com 

Property is currently vacant. 

Auction says "Buyer will receive a Special Warranty Deed (SWD) or equivalent"

Current ownership and title is in the name of the bank (Wells Fargo). 

Does a Special Warranty Deed mean that any previous liens, judgements against the property now become the responsibility of the new owner? Say if I were to win the auction and get an acceptance from the bank on my bid/offer, do I become responsible for it? 

Can anyone shed some light on how SWDs work, especially in PA? 

Thanks much!