@Chain; That's what I initially thought and went testing in my other Sims 3 folder (test-folder) where those lots got placed with LLAMA's on it. And when I made the call to travel, my active did walk through any walls. That's when you hinted me towards the LLAMA's.

I reverted back to my live game and did some more testing, after I checked there were no LLAMA's in it, and with a single Sim traveling that didn't occurred. It might be my initial report was due to having an inactive join as travel companion and the trailer it was in (need to fix the stairs). I'll run that again and see how it goes.