Perforce had introduced an enhancement to their streams infrastructure called "task streams" a few versions ago. Task streams are like development streams, except that they branch files in a more lightweight fashion. Unfortunately, in doing this, they also made some commands sensitive to the "current workspace" (AKA "current client"). In particular, `p4 changes` now reports different results depending on the current client - if you don't specify a client, it will omit some results.

Since we're a paying customer, we have access to the source code. It looks like PerforceRepository.java, `getChangesBetween()` constructs the command-line used to look for changes, but does not include the `-c clientname` parameter that other commands do include. Fortunately, it looks like `setupClient()` has already been called, so it should be possible to pass the client name to `p4 changes`.

Specifically, I think this:

    .addArgLine("changes -s submitted")

should look more like this:

    .addArgLine("-c " + getClientName() + " changes -s submitted")