Migration (transfer) from a third-party server of otaa devices already created

Hello to all,

I ask for help to understand if it is feasible to migrate/transfer alredy created otaa devices from a third party network server to chirpstack NS.

Some remote sensors are able to join if they notice that they have been out of network for a certain period of time, others are not.

All remote devices use the OTAA join as the access method.

We have all the information on the devices that are unable to perform a new join, including NwkSKey and AppSKey.

My question: is it possible to programmatically create new ‘OTAA’ devices using the keys created by the previous server?

Thank you.