Adding system - Already in DB?

[GCooley]

I am trying to add a system to SIM 4.2 SP1. To give a bit of history we had DNS issues with the system so stopped using SIM for about a month, during that time SIM was re-installed by a fellow employee to attempt resolving issues before it was discovered that it was just DNS.

I lost my host file I had created somewhere in the chaos so I tried recreating. I added just one known system after deleting the same system from the 'All Systems' list. I can not remember the exact syntaxt I used prior to this since I was just (and still am) in the learning phase for SIM but it will not add the new system. To test, I attempted a manual addition and it states the IP is already in the DB but it does not show up in the 'All Systems' list. Ideas?