Manual coinswaps: what is the technical background to it ?

[Mr_Snipes]

Hello there,

recently i had to initiate the painful procedure of a manual coinswap for Scorecoin.
When i asked about the reasons behind it, i was pointed here.
The different threads that come up are all announcements for these swaps.
IIRC big names like LTC, ETH, BTC did not have such processes, they however
forked around quite a bit- without having to do a swap.
Is there more info on the underlying requirements for these coinswaps ?

cheers