Reverting to classic scenario in SRM7.1, from PPS and extended classic

Hello Experts,

Recently we have moved from SRM7 to SRM 7.01, in which we can have PPS without Extended classic scenario.

As business wants classic scenario, How can we make the system as classic , in which PPS and extended classic is activated.

any badi is available for this? Please help.

Regards,

Raju