IR hinges and Clampotrons?

[Stealthie]

Hi folks, first post here so be gentle.

I KNOW the IR readme says that you shouldn't connect Clampotrons directly to hinges but, unless I'm mistaken, that's not the full extent of the problem.

I tried building a Shuttle with a "payload deployment arm" using an IR hinge stuck to the back of the cockpit, a couple of girders and then a Clampotron and I'm having problems.

On the launchpad the hinge works fine.

If I detach the payload in space the hinge continues to work fine.

If I re-dock with the payload the hinge still works fine.

However, when I dock with another craft, such as when I'm trying to use the shuttle to carry a cargo up to a space station, and then detach the cargo I find that my hinge stops working.

It seems, to me, that the problem is something to do with 2 ships docking which screws up the way IR works.

I'm sure somebody has a definitive answer to this. I did google it but it's one of those things where there's so much stuff about it, and most of it turns out to be about entirely different things, that it's tough to find relevant information.

Anybody know if there IS a reliable way to make use of an IR hinge in an assembly that also uses clampotrons and which will dock with other ships?

Odd thing is, at one point I built an ISS-style solar array for my space station and used IR hinges to fold it up flat against the sides of the launch vehicle, got it into space, detached the array from the launch vehicle (it was attached via a clampotron snr), picked it up using an orbital tug fitted with a clampotron snr, moved it across to my station and attached it to a node via the clampotron snr and then, after all that docking and undocking, when I finally came to deploy the array... the hinges all worked perfectly.

So it must be possible to use IR hinges in conjunction with clampotrons in certain circumstances.

Or, is it only the standard clampotron which causes IR to throw a fit, and the clampotron snr doesn't cause the problem?

Back to KSP, I guess...