I  Tested the latest MSHV version.

1: It does connect to Ham Radio Deluxe as Radio... (same as WSJT-X does)

2: It Does talk with HRD Alert ande Vice verse (You need to put in the IP and port that is in HRD Alert Multicast options.

3: It also Writes to Logbook via QSO Forwarding (be sure the port is 2333 and not 2233 as that's default)