I still miss a check of each property as I suggested with
assertPersonalNote(String expectedCgeoNote, String expectedProviderNote, String editorInput).

I could very easily change your PersonalNote constructor to not parse anything, but to simply store the full string in the providerNote. Obviously that implementation would be wrong, but this test would remain green. Therefore this test is not sufficient. Even if you use the toString() method at other places, please test each and every member of the PersonalNote class separately.