and to answer my own question - just replacing the app does NOT work. about this build will list
civ version 200
save version 200
build version 2.0.8.0
with just the app replaced but:
civ version 208
save version 200
build version 2.0.8.0
with moving over the whole folder - this is warlords obviously
civ version 200
save version 200
build version 2.0.8.0
with just the app replaced but:
civ version 208
save version 200
build version 2.0.8.0
with moving over the whole folder - this is warlords obviously