923+ with 1 ssd Cache

[Enquiries]

I have a warning in my Data on my NAS. SSD cache group 1 is missing, but the datas is still accessable, because only SSD-caches with read only access use the cache groups capacity. We recommend that you remove all SSD caches, that allocate the capacity from this cache group, then create a new cache group. Can you tell me if I should simply remove the ssd cache then replace it back into the NAS to create a new group?
Synology Hybrid Raid(SHR) with data protection for 1 Disk Fault Tolerance.