BOP not able to confirm

Hello experts,

I americium moving for a lawsuit who created an situation wherever PAC is not relevant, lone PAL with capableness based allocation. I americium investigating aatp and BOP and getting unusual issue.

I followed beneath steps

1st - I created a income bid which got confirmed connected the required transportation day one selected during creation.

2nd - Now I ran BOP with escaped strategy connected that bid to escaped its confirmation completely. 

3rd - Now erstwhile one americium moving BOP connected aforesaid bid with WIN strategy it is not confirming connected the required transportation date. I tried WIN, GAIN but some failed, and IMPROVE is pushing to a aboriginal day of requested transportation date. But if one unfastened the income bid successful alteration mode and tally availability check, strategy is confirming connected the requested transportation date.

So wherefore BOP is not capable to delegate confirmation connected Requested transportation day but availability cheque successful alteration bid is capable to?