Devices won't reconnect after being disconnected

Hi all
I am having an issue with few devices on our Ignition server. I have 2 AB SLCs connected over DH+ and 1 Red Lion Box over Modbus TCP which will not reconnect in Ignition after they have been disconnected. I have tried to disable them and then enable them but without great success. I then installed 7.9.7 on my local PC and added them and they connected fine. This leads me to the idea that it is something to do with Ignition rather than anything to do with the network.

Do you have any idea what could it be? I don’t have the option to restart the gateway or the OPC for now.