Hi. Thx for your kind help. I tried both mod together, and it seems that there is always a conflict, because loading a map with my silos already existing, it ended with them changed into your silos... :-)
The name that I use are : cargo-rockets (techno) cargo-rocket-silo cargo-rocket-silo-rocket cargo-rocket-part cargo-departure cargo-arrival cargo-mapmark
Oh yes, I undertand the problem : your migration migrates my silo into yours. Nevermind, there is no solution for this.
Thx for your changes anyway.