Rebuild RAID1 back, data would be intact?

[smoking warp]

Hi there, For the test purpose we disconnected the original healthy 2x Seagate HDDs, and connect 2x WD HDDs and rebuild RAID1 to re-install a Win Server. After the completion of the test, we want to disconnect the WDs, and reconnect the original Seagate(s), and rebuild RAID1. Upon this process, is there a risk of losing data? or safe to proceed to get back to the original situation? RAID1 is controlled by SAS 6G card.

Thank you in advanced... in a mood of timidness..

 

[smoking warp]

We swapped the tested HDDs with a new HDD to rebuild RAID1, then put the tested HDDs back.
It needs to re-boot twice after Manage Volume and "active"

Peace in mind...