The actual running firmware is the "Active" firmware which is 6.0.0. The "Current" firmware is the one which would be started during the next reboot.
This is a known issue in version 6.0.0 and 6.1.0. The reason is the symbolic link of the "Current" firmware is not updated during the upgrade process.
In order to avoid this situation, follow the guide below.
1., Upgrade from 5.x.x to 6.0.x.
2., Once the upgrade is done, do a manual takeover to the Slave node.
3., Upgrade to 6.x.
4., Do another takeover.
Once this is done, the issue should not be encountered.
If there are any questions, please open an SR at https://support.oneidentity.com/