Today I tried to acquire some "normal" writs (which I understand from posts in the forum should be possible, and I succesfully acquired the Registry contract for them). My character is also is a pirate, and has have a few pirate writs still needing completion. When I visited the Registry agent in Crow's Nest, she only displayed the same writs as Eamon does, but I also had the option to choose Pirate writs I had already completed. I tried restarting the conversation multiple times with the same result. I also tried logging in and out, to no avail. I was able to acquire one of said writs, have it logged in the Registry Agent's Contract and also progress at the writ. I discarded the writ before completion, so I do not know if I would also have been able to get the reward for its completion.
Things still to test on my part:
- Try again after a server reset.
- Test different registry agents (only tried the one in Crow's Nest so far)