sales order disappear in Planning table

Hi ALL,

We face an issue where sales orders are disappearing from planning table and when we run CCR we found those sales orders as missing in APO. we push them to APO.then for time being those orders will appear in APO. Later after some time again issue repeats. there is a program SDRQCR21 triggered hourly basis and found from log some sales orders are updating and deleting. we use LOCALI table for ur info and sales orders are vmi sales orders.

some time cif queblock is happening for these sales orders.
we want your kind help to resolve this issue as it causing lot of confusion to planners.

Thanks a lot
Bans