Ah, I misunderstood your question to be about the Ridged Multifractal type in Wilbur, not the Wilbur Ridged Multifractal type in Fractal Terrains. There isn't a Filters menu in FT: that's a Wilbur feature.

I don't know that I've ever seen circles like the one you're showing. It looks suspiciously like a Moire pattern, but those shouldn't happen in FT. It looks like a bad reprojection of an aliased height map, but, again, that that shouldn't happen in FT. If you've exported the map, edited it in a nother package and then imported it back into FT, that could be one possible cause.

If you haven't made significant editing changes to your FT map, you should be able to use the North Pole Position feature to adjust the location of features on the world (the two angles for the north pole position are treated as rotations of the sampling sphere for the fractal function). Adjusting the latitude will rotate features on the world up or down.