Copy position from one rope to another

[josemendez]

Thanks a lot it seems to work ! 

I return on my problem of "teleportation" which reappeared (cf. the right rope on https://imgur.com/a/AZ3G4f8), do you have an idea where it may come from ?

Not really, never have seen similar behavior. Looks close to what happens when the solver's sleep threshold is too high (particles move in a stop-motion fashion) but not quite the same.

Is the code you originally posted the same you're currently using to copy data from one solver to the other?