I set up and networked the new gear on the bench as the boat isn't here yet. The marks uploaded from the card no problems and displayed. I them realised that I hadn't really done a very good job of it, as I has ignored warnings about incompatible symbols, and they had all loaded as red crosses.
Since my original post, my ambitions have expanded, and I realised (thought) I could get all my old professional marks in. Upon uploading from the last C Plot backup, found I had some 28, 164.
.. Axiom will only accept a max of 10,000. So I've had an interesting week of playing with it, using the correct symbol sets, merging, and editing into likely areas which will be useable with a pleasure boat. There are some areas no-one will ever visit in a pleasure boat off here--I don't care how far offshore you run over there to get to the reef, you won't be going over 50 nm miles offshore to get to the shelf here on the upper west coast.
During all this, I discovered that, according to the manual, the Axiom will only support 15 tracks , but of up to 10,000 points each? I like to manage my tracks, I'm not one of those who just turn it on at the ramp to have it run all day. If I want to keep a specific track, looks like I'll have to convert it to a route, which looks easy, and it will support up to 250 routes. So I've deleted all my stored tracks off the converted marks, I just had too many.