We will release the next SJA for Linux (version 6.0x) very soon. Probably on Friday.
Actually I am not sure if 5.0 will work (and I have no option to test right now!). But I think it will if charset settings in server configuration is the same and if you use the same tag for both connections.
Version 6.0 will definitely work with data stored on the server with ALL charsets, including unicode (utf8, ucs2).