A method of handling a handover for a communication device in a dual connectivity with a first base station, BS, and a second BS of a network comprising the first BS, the second BS and a third BS, the method comprising: the first BS connecting to the communication device with a first signalling radio bearer, SRB; the first BS transmitting a radio resource control, RRC, message to the communication device via the first SRB, wherein the RRC message comprises a first secondary cell group, SCG, configuration configuring the second BS as a secondary node, SN, configuring the communication device for communication with the second BS in dual connectivity, and configuring a second SRB; the second BS transmitting a first measurement configuration to the communication device via the second SRB; the second BS receiving a first measurement report associated to the first measurement configuration from the communication device via the second SRB; the second BS configuring a second SCG configuration to the communication device and reconfiguring a configuration of the communication device by transmitting at least one configuration included in said second SCG configuration to the communication device via the second SRB; the first BS determining the handover from the first BS to the third BS; the first BS transmitting a first interface message to the second BS in response to the determination, wherein the first interface message is for requesting at least one of the first measurement configuration and the second SCG configuration; the first BS receiving a second interface message from the second BS in response to the first interface message, wherein the second interface message comprises at least one of the first measurement configuration and the second SCG configuration, the second SCG configuration being the latest SCG configuration configured by the second BS to the communication device; the first BS transmitting a Handover Request message to the third BS, wherein the Handover Request message comprises the at least one of the first measurement configuration and the second SCG configuration; the first BS receiving a Handover Request Acknowledge message in response to the Handover Request message from the third BS, wherein the Handover Request Acknowledge message comprises a Handover Command message; and the first BS transmitting the Handover Command message to the communication device. the first BS connecting to the communication device with a first signalling radio bearer, SRB; the first BS transmitting a radio resource control, RRC, message to the communication device via the first SRB, wherein the RRC message comprises a first secondary cell group, SCG, configuration configuring the second BS as a secondary node, SN, configuring the communication device for communication with the second BS in dual connectivity, and configuring a second SRB; the second BS transmitting a first measurement configuration to the communication device via the second SRB; the second BS receiving a first measurement report associated to the first measurement configuration from the communication device via the second SRB; the second BS configuring a second SCG configuration to the communication device and reconfiguring a configuration of the communication device by transmitting at least one configuration included in said second SCG configuration to the communication device via the second SRB; the first BS determining the handover from the first BS to the third BS; the first BS transmitting a first interface message to the second BS in response to the determination, wherein the first interface message is for requesting at least one of the first measurement configuration and the second SCG configuration; the first BS receiving a second interface message from the second BS in response to the first interface message, wherein the second interface message comprises at least one of the first measurement configuration and the second SCG configuration, the second SCG configuration being the latest SCG configuration configured by the second BS to the communication device; the first BS transmitting a Handover Request message to the third BS, wherein the Handover Request message comprises the at least one of the first measurement configuration and the second SCG configuration; the first BS receiving a Handover Request Acknowledge message in response to the Handover Request message from the third BS, wherein the Handover Request Acknowledge message comprises a Handover Command message; and the first BS transmitting the Handover Command message to the communication device.