Performance of KO8G transaction - maintenance order settlement

Hello,

During month end our finance team runs KO8G to settle maintenance orders.  It takes lot of time to complete this background job though the actual number of orders process by the job is very less (around 25 orders).  Looking at the job log, looks like the job is going through 21000 orders to find those 25 orders that needs to be processed.  Looking at the spool, we see that there is no change in 21000 odd orders. 

Below are the screenshots of job logs and spool.

I am looking to change the selection parameters in KO8G to improve performance.  It would be quick if KO8G can directly hit those 25 orders rather than going through huge list of 21000 orders.  To achieve this I am trying to understand the "status" option in KO8G selection screen to tick/ untick to my advantage.  Can somebody explain how this status works here ?

Below is the screenshot of KO8G selection screen:

Thanks in advance,

Sankar