The embodiments herein relate to a method performed by a mobility node for handling network connections for a UE. The UE is simultaneously connected to a first gateway via a connection to a 3GPP network and a connection to a non-3GPP network. The mobility node detects that the UE has moved to another location. The mobility node selects a second gateway that the UE should be relocated to. The second gateway is closer to the UE at the other location. The mobility node transmits relocation information to the first gateway. The relocation information indicates that a gateway relocation to the second gateway is required for the UE. The gateway relocation involves deactivation of both the connection to the 3GPP and the non-3GPP network.