Each game fork has its own rules. Additional forks may be possible if the particular game would allow it at the time. Reunifications must be legal in all affected forks.
[Martha] Well, I've realised there's nothing doing with mine for the next couple of months, sadly, although it was a rather good concept, tho I say so myself, so I guess your move would at least provide some action.
I wondered if you'd seize the chance to gazump me. :o) And I gave another night to add a bit of Ibsen, Shaw, Mamet, Noh drama and Thos. But then I thought "why bother"?