FMC host change to manual custom operating system then vulnerability mapping = none

[evan.chadwick1]

Hi Folks, 

I have updated one server from the auto setting of 7, Server 2008, 8, to the manual custom choice of Server 2012 R2. 

SInce doing this I no longer see vulnerabilities listed at the bottom. Also when searching the vulnerabilities for this server it does not show up.

I was also expecting the FMC to update other Server 2012 R2 from '7, Server 2008, 8', but this has not happened after 24 hours (its a busy server).

Anyone know why no vulnerabilities for custom operating system setting?

[evan.chadwick1]

An update: Since posting Firepower has labelled the Server back with '7, Server 2008, 8'. This resulted in two entries, my manual entry and the system entry. This also resulted in Vulnerabilities. A few days later it changed the label to 2000, XP, Server 2003, alongside my manual selection of 2012 R2, also resulting in vulnerabilities.