the old one had forward voltage of 1.28 volts but the one i ordered have forward voltage of 1.05 volts.
You need to read the datasheets more carefully - they are the same! But you should also go look at their curves.
NUR460 4A 25degC => 1.28V
MUR460 4A 25degC => 1.28V
MUR460 3A 150degC => 1.05V
MUR460 3A 25degC => 1.25V
In any case a minor difference should not be a problem in an SMPS. The reverse recovery is more critical and this is comparable between diodes too.