Mongo upgrade back up plan 4.4 to 4.2

We are to upgrade to our mongo atlas cluster i;e from 4.2 to 4.4.

As a backup plan we have created a new 4.2 cluster.

Incase there some issues with 4.4 we will point it to newly created 4.2 cluster. But the backup from 4.4 is
not compiltable with 4.2. it shows below error while restoring backup.

Error: The requested restore could not be started: The source and destination mongoDB versions are incompatible.

Documentation says the target cluster must run the same or the next major release version of MongoDB as the snapshot MongoDB version.

So, we are at risk of loosing data. what should be the workaround for this situation?