Optimization Run without sucess deleting all old planning data

Hi all,

I am facing a problem regarding the optimizer run, I had an unsuccessful run that deleted all data that were already planned for the same selection.

Is this the standard behavior? If I use the flag "do not delete any orders" what would happen:

- The old plan would not be deleted with or without success of the new run

- The old plan will be replaced only if the new run succeed.

I want to find out if there is a way to avoid the old plan being deleted, I wan t to replace it only if the new run succeed.

Thanks a lot and regards,

Luiz