A.your best option would be to configure mutual transport layer security (tls) from -ex10 and - ex01.
B.Your best option would be to run ExportEdgeConfi.ps1 script from Edge1. you should also run importedgeconfig.ps1 script from -ex01.
C.your best option would be to permit exchange server authentication from -ex10 and -ex01.
D.your best option would be to create a new edge subscription file on -ex10.thereafter the new file should be copied to -ex01.