Only show Invoice, not subclasses in reference type select for booking.
Only show Invoice, not subclasses in reference type select for booking.

xuewenfei/bookyt,hauledev/bookyt,wtag/bookyt,hauledev/bookyt,gaapt/bookyt,wtag/bookyt,silvermind/bookyt,wtag/bookyt,huerlisi/bookyt,huerlisi/bookyt,xuewenfei/bookyt,gaapt/bookyt,silvermind/bookyt,huerlisi/bookyt,gaapt/bookyt,hauledev/bookyt,silvermind/bookyt,gaapt/bookyt,silvermind/bookyt,hauledev/bookyt,xuewenfei/bookyt