i get this too! two eps from battlestar, each with a slightly different name means i've got two battlestar icons in the plugin.
this needs a major rewrite of how the parsing & the inner DB mechanism work.
Lucky for you I just spent a lot of time (much more than I expected actually) doing exactly that.
So now even if the parsing of the filename extracts different series name, when the name is matched to the same online entry everything will be merged. Hopefully.
I'm going to do another release tonight with those changes.
France