Ty just noticed that it is doing it on other sciences as well will report it to mod creator.

I can't believe this was overlooked and has not been implemented yet.

Ag sciences that where loaded into rocket disappeared in transit to platform. Lost several hundred before I figured it out. If they where loaded by any other way than robots with the automated requests from orbit around 800 would be lost. Not lost due to spoilage just gone.

https://i.ibb.co ...

Yes.
For some reason, I don't know if it has something to do with the fact that I am controlling a chain signal but the train releases long before the lower limit is reached.
https://i.ibb.co/QcCDyg4/427520-38.jpg

My trains stay in the pen until the latch allows the chain signal to change to ...

Thanks for your post, however I tried your latch and it doesn't work. The latch does not maintain until the lower limit is reached. It releases the train before lower limit is reached.

I have tried to use the single latch and multiple others they did not work. Always ended up allowing unwanted results. So I offer this up. It works for what I do with it.

https://i.ibb.co/MVxtJWq/RS-Latch.png

The Latch allows trains to move forward only when lower limit is reached and continue ...