Having just tested it out, it seems not to be doing that now: I tried both manually setting the DW security and doing it with a journal-wide change, and the LJ posts both came out with the same security as the DW ones.

So it might have been a bug that was now fixed. Or it might relate to importing, which was what I was in the middle of when the one that *didn't* have the same security....

Haaaaang on. When I made the earlier post, I immediately edited to change the security level on DW. That'll have edited it on LJ as well, won't it?

Ignore me. I think it's working just how it's supposed to.