In response to the X2 handover signaling and to transferring the low-latency data for UE 401, RRCF 613 transfers an N2 path switch request for UE 401 to core AMF 421. In response, AMF 421 transfers path switch instructions to core SMF 422 to switch UE 401 from source CU 415 to target CU 416. SMF 422 uses NRF 423 to select UPF 432 and ASF 434. SMF 422 transfers N4 signaling to target UPF 432 that directs UPF 432 to exchange low-latency communications for UE 401 between SDAPF 612 and target ASF 434 to serve the low-latency application. In response to the path switch for the low-latency application, SMF 422 identifies source UPF 421 and the low-latency application to target UPF 432 over N4 signaling. AMF 421 and target RRCF 612 exchange N2 signaling that directs CU 416 to serve UE 401 with the low-latency communications to target UPF 432.

In response to the N4 signaling from SMF 422 that identifies the low-latency application and source UPF 431 for UE 401, target UPF 432 indicates source UPF 431 and the low-latency application for UE 401 to target ASF 434. In response to the low-latency application handover, target ASF 434 transfers the ID for source UPF 431 and the ID for the low-latency application to core NRF 423. Core NRF 423 translates the IDs for source UPF 431 and the low-latency application into an ID for source ASF 433. Core NRF 423 indicates the ID for source ASF 433 to target ASF 434. Target ASF 434 uses the ID for ASF 433 to retrieve the UE application context for UE 401 for the current session from source ASF 433—possibly over the X2 link.