Change in Master data

Hello,

We have a 0country and 0Region which are used by many data targets.

By mistake one of my collegues has changed both the objects to 'Text Time Dependent'

Now the Description of the object is not seen in any of the reports.

To change the object back to Text time independent..do we need to delete the data from all the cubes and ODS?

Or is there a way where we can revert the changes back without deleting the data in data targets.

Also these objects are used as attributes, Nav. attributes and compounding in many other infoobjects. Do we also need to delete the master data for these.

If there is any other way without deleting the data in data targets please let me know.

thanks,

Kalyan