Print Immediately is Blank?

Most of the time we rely on print parameter to make some decisions in form printing, one of the odd scenario that you have to be careful when you are developing application form is when you have a choose print parameter dialog screen as per following (EA60):

If you set "Output After Last Document" (LAST_DOC_ACT), FM 'EFG_PRINT' will clear the value of field TDIMMED and TDFINAL. (source code: line 516 to line 519). Thus, no matter how hard you set "Print Immediately" in the following screen:

C-ITCPO-TDIMMED and C-ITCPO-TDFINAL will always be blank in application form.