i think a chain swap means just a fork(exchangers following another chain that is provided by the developer), a coinswap tho means eventually you will have less coins on your exchanger accounts but it will worth more, the coinswap can be 10:1 (10 actual neos coins will worth 1 new neos coin)", 50:1 (50 actual neos coins will worth 1 new neos coin)" ... 100:1 or 5:1 ... idk, in any case new neos will worth more... amina follow this hopefully for more news from the dev.