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Is it possible to create a new batch by combining the two small batches?

I have a problem.
I have two batches of raw materials with quantities of 5 pieces in each batch.
I need to produce 7 units of a product with a work order using 7 units of raw material.
To do this, I have to manually add one more row with raw materials to the stockentry and manually specify the batch numbers.
Is it not possible to pre-combine two batches into one, so that later you do not select them manually?