in your hardware Tree we can see that you replaced the X20SL8000 (which is discontinued) with the current X20SL8100. I think this was intentional because you also replaced some other Hardware to modernise the Equipment.
The X20SL8100 supports Safety Release 1.10 (Legacy Safety) as well as mapp Safety.
AS4.12. is supporting both Systems aswell.
So you can choose wether to stay with Safety Release or to upgrade to mapp Safety.
If you choose to Upgrade and replace the SafePLC you might look also into the Product Set of X20SLX , because with only 3 additional Safety moduls i think this small Safety PLC would be more cost effective.