After running manual heuristics next day plan disappearing at each DC level in APO

Hi SAP Gurus,

After running manual SNP heuristics next day plan disappearing at each DC level in APO,

We are running SNP heuristics in interactive planning book, after save , when i see the next day plan was disappearing at each dc level.

We are running 8000 to 6500_QK01

8000 IS PLANT

6500_QK01 IS DC

kindly suggest me soon,

any master data need to check ?

any global setting need to be check ?

any manual setting to do ?

PLEASE SUGGEST ME,

BABU