Two more suggestions regarding your initial requirement:
a) Adding PPPAR E checks for entries during the month, likewise if you want to deactivate attendance bonus for mid-month separations, add a subnode for PPPAR A. You can follow the same process as we did for PPPAR E.
b) For the existing sub nodes E,B, U, the existing lines are ZERO=RNA ADDWT 2005
I think above ZERO=RNA, add a line ADDWT *.
This will ensure that the original wage type /001 (on which this logic gets processed) gets added to IT irrespective of whether or not the employee gets the attendance bonus.