Hi Asuvamsi,
Could you please share the screen shot or COR1 with old production scheduling profile?
As I know it is not possible in COR1 to have default order type from production scheduling profile.
There may be some custom development.
You may check by converting planned order to process order COR7 or COR8 - With Planned Orders it will work for you.
Regards,
R.Brahmankar