Batch Split in MIGO based on custom Condition record

Dear Experts,

We are facing an issue at time of Stock determination in MIGO Goods Issue.

For standard condition record, the batches are getting split perfectly if quantity is more.

But for materials where we have maintained our own condition record, the batch splitting is not happening! I mean the quantity is not getting split among the available batches.

Please guide me on finding the root cause for this. How can an ABAPer proceed with this issue?

Many Thanks!