So, yes, I was able to save it to the library. Efforts in actually replacing it have been...interesting. It's not a residential lot so the lot has to be zoned community, but zoning it to "Base Camp" won't allow you to place it (perhaps if you'd created your own base camp it would). I had to zone it to "Visitors Allowed".
And since it won't let you save a vacation world without an active Sim present you have to go back to the main world, upon which the game froze. I've yet to determine if this is at all possible, lol.
But, thank you for the help.
