I am currently on V3.51. When connected to shore power on my Multiplus pair, I click on the shore power block of the Ivervirw page so I can adjust the input current limit.
When I do so, the label at the top of the screen is
Shore Current Limit
AC Input 2
I just re-verified this and it would appear that this has been corrected in a firmware update as it now shows AC Input 1 in the Shore Current Limit page.