Please don't multi-post like that, @castlebuilde. However, the only shard that gets occasionally wiped is the beta shard - that is to say, Pineapple at the moment. All the other, non-beta ones (Excelsior, Everlasting, Indomitable, Reunion, Torchbearer) are not wiped.
The legacy client (safe mode) is a completely different thing from that; all that dictates is how you access each of those shards - we're trying to move everybody onto the new 32/64-bit clients, so that game development can continue at a faster pace. However, it doesn't matter which client you use; your data will not be wiped: there is no "safe mode shard", only legacy and non-legacy clients.