Migrate archive data between two collector

My situation is as follows:

I have 2 scada server SCADA1 and SCADA2, and their historian collectors working for 3 years.
Now one server needs to be abolished and all switch to SCADA1 because SCADA2 extinguished.

I'm interested in how to transfer data between collectors, and all archive data from SCADA2 move to SCADA1 server because I need all the data, not to lose.

I ask because source tags is different with SCADA2. Server SCADA2 have prefis SCADA2.tag.f_cv, and now have to switch to SCADA1?

Has anyone had this problem and how to solve it

thanks in advance