Ok, I am nearly as outdated on my skills then you are lol.
Ok, cheek your collision masking on both your vehicle as well as triggers...
Also, enable developer controls so you can hit your f5 key and SEE the collision masks, triggers in-game.
Make sure they are not too high, or too low to be activated by the vehicle.
Scales, cheek your Lua files. Sometimes they require a file path ether from the trigger to the Lua file or the Lua. directs the functions back to the trigger.
Now, this was done in GE back in 2013, now this is done with the XML, and the maps XML under
<hotspots>
I would think. As the selling places, silo's, as well as sell triggers, are have been listed there in most of the maps I have edited for 19.
Just a smie-educated guess my friend.
Hope it helps a bit.
Also, check out the updated tutorials from Giants.
This is an 11 video playlist,
Farming Simulator 19 - Modding Tutorial 4.0 [Englisch/English]
https://youtube.com/playlist?list=PLbYHqzQnpGF4X-zVmcs1G7glxj7jtdLHyGood luck, and welcome back.