Basically what the thing says. Every time I get a new Romulan boff, all my previous ones are removed from their slotting on my ship. Hardly a huge deal, but incredibly annoying if I warp straight into another encounter without noticing.
I didn't have this issue until I received the 4th BOFF, so I don't know if it's consistently clearing your ship stations or not, or what the interval is, but I can confirm that it does in fact happen. This may require some further testing.
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