"The new design has a "resume" feature similar to the LM14A, i.e., the
ability of returning from Off to the previously set brightness level.
However this feature is not called into play when the module receives
an On signal but when it receives a Dim signal."
Actually, IMHO, this is an improvement.
The return to previous dim level, to me, was a bad idea. I have never once wanted a lamp to return to the dim level I used (and have since forgotten), days earlier. I even have several macros which detect a manual 'on' command to one of my LM14A's, and automatically follow ups with a "dim 100%" extended command.
BTW, how do we buy these "new" LM465 modules?