InfoObject - reverse (undo, back) migration 7

Boa tarde,

I migrated the InfoObject 0vendor_attr: 3.x to 7.0 ... but, I did wrong, and now I want go back to the 3.x.

I tried this topics:

- reactived the DataSource, but I didn´t find in Business content anymore;

- tried to find the option to do the reverse.

Please, Anyone know how to back ?

Thanks and advantage.

Obrigado,