How to make MRP to take into account delivery time from info record without plant

Hi experts!!

From transaction omdt we have marked flag "Sched: Info/Agrmt" for each MRP group in a certain plant. This flag is marked also al plant level.

I have got a material with a unique supplier in its source list ( in the plant in which flags are marked) and 100% cuota arrengement for this supplier. The info record defined for the supplier has no plant.

When MRP is executed in the cited plant, it creates a PR -> Price is read from the info record without plant whereas delivery time is not read from info record without plant; it is read from material master.

Is it possible to change this behavieur?

Thanks in advance.