You may or may not be aware of a number of searching shortcuts available to you in LS2 PAC.  

It appears you can still search by facet in LS2 PAC.

format:"[attribute name]"  i.e. format:"Book" 
series:"[attribute name]"  i.e. series:"Magic Tree House" 

author:"[attribute name]"   

collection:"[attribute name]" 
year:"[attribute name]"  for publication year 
subject:"[attribute name]" 
targetaudience:"[attribute name]" 
genre:"[attribute name]"​ 

(It seems that quotes are optional for single words , but necessary for phrases.)