Staff Alterations to Private Filters?

Right, all the drama aside, did the staff make sweeping changes to people’s private filters?
 
As of right now, my filters seem to be messed up. I haven’t had time to fully check out what things are suddenly hidden but shouldn’t be, however I have noticed images that I have never seen before (specifically 4+ years old) that fall into the tags I have filtered. Yes, I am using the correct filter, but some of these images have lost tags like suggestive or questionable (tags I hide on said filter), but have not been marked explicit. Please explain what you guys did, because this is really frustrating me.

@Jamin-P-Rose  
At least I don’t have ability to edit private filters.
 
Samples of images, which bypasses your filter, would help.

@stsyn
 
I will provide them when I get home from work.

As an example 33761 was classified as explicit 2 years ago, and then 7 days ago the explicit tag was removed leaving it only with the “grotesque” tag. The grotesque tag isn’t a sufeceint replacement for one of standard 4 (Safe, Questionable, Suggestive and Explicit).

Another such image is /400940. Clearly suggestive, if not out right explicit, but shows no history of ever having one of those tags, yet I’ve never seen it before.

@Jamin-P-Rose  
Please don’t mislead people, because reratings of old images clearly is not a private filters manipulation.
 
As for images you linked: rerating stuff happens, and old images got retagged. Current definitions of rating tags can be viewed here .
 
As for >>33761 — raised question, as this image has multiple tagging mistakes