For some reason this thread is sticking in my head, LOL.
Back-soldering crimped connectors is completely not covered in my copy of IPC's "Acceptability of Electronic Assemblies." They DO cover soldering swaged hardware, such as rivets, and IF soldered, the rivet must have at least 330° of solder contact around the head, no protrusion of solder into a hollow-core rivet and a good fillet (basically good soldering technique).
Where I work, we use a lot of crimped connectors so I asked one of the guys in the production room about back-soldering crimped connections. He told me it's not generally permitted because heat from soldering weakens the mechanical connection and trashes the plastic insulator. Our standard on the mil-spec stuff is that the wire must fill the connector barrel but not protrude to where it will interfere with the bolt-on/spade connection. We use two type of crimpers, one for power transmission wires and another for electronics.
Hope that helps some.