UNable to create graph, since it suppose to exist but not

[Rno]

Hello,
I have a strange things on one of my Cisco, I upgrade it yesterday, and since then I have an error in Thold telling me that it status is breached (low), so far why not!
So it wasn't the case, the interface was up, and I didn't find any information on why the polling of this interface for the status wasn't working anymore.

So I decide to delete the graphs (both traffic and status) for this interface.
All wen't good.

But then I go on the device, re-poll the interface list (the little green arrow on snmp interface), automation create then a graph for the traffic, but not for the status (even if it should as usual)
So I decide to create manually, but then it's not possible because on the list it's display as allready existing. but whn I go to see the list of graph of this device, the status of this interface is not showing up.

How can I find out where is this graph, and how to remove it.

I try to find out any orphean graph, re-index the device, re-populate the poller cache, nothing
And I have no clue to where look on the DB (yet)!

[TheWitness]

When you removed the other Graph, did you also remove the Data Source? Were there any errors in you Cacti log when you did that? Search the graph_local and data_local tables for the snmp_index and host_id in question. Then, you will at least have made a start...