First - as Sigop said clerks would be better to ask - go see your pay clerk and they should be able to tell you exactly what you should get in a few minutes.
A quick rough estimate is that you will continue to get all your allowances (HA, HAB, FSP, RA) that you received for the operation. Most OPS are tax free so they have built in the $865 to cover off this and for some reason multipied it all by 1.35 percent. Add all that up, make your regular monthly deductions (EI, Tax, CPP, etc) and you will get your net amount. example - allowance total $1k+865+$25.18 (1.35%) - 604.86(32% rough est of deductions)=1285.32 net. For rates of allowances: http://www.forces.gc.ca/dgcb/dcba/mfs/engraph/DCBA_417_152011_e.asp?sidesection=2&sidecat=10
another good link is: http://cfsuo.mil.ca/fss/intro_e.asp - small cell that are the experts on OPS admin