Good day razzy.!
To get a conversion of your foreign CPL license to CASA CPL you'll need complete both
CPL AIR LAW & CPL HUF.
The documents required for the CPL air law exam are as follows from the CASA website;
Airservices List
CAR 1988
CAO 20-95.2 (Including Amendments)
AIP Book
ERSA complete
AUS PCA
ERC LOW 1/2 and 3/4 only (2 ERC Lows)
Hobart/Launceston VTC
Brisbane-Sunshine Coast/Gold Coast VTC
No other references or material permitted
So a CASR isn't required for the exam and Therefore not permitted.
Good luck with it all.
T&G.