As mentioned earlier, welcome. I'm new here as well, but a google search of the Model number sent me here:
https://www.cubcadet.com/en_US/prior...AOA1CS010.html
Looks like an XT1, 42" Stamped deck, 18 HP Kohler, with a Hydrostatic Transmission.
And you are correct, the second Model number is for the bagger assembly.
Hope that helps.