iTunes Search API returns all version of Customerreviews in spite of currentversion

I tried to get customer reviews with this url

> http://itunes.apple.com/jp/rss/customerreviews/page=1/id=XXXXX/sortBy=mostHelphul/currentVersion/xml

Until yesterday, I could get reviews of "current version", but now I got all version reviews from this api.

Does something specification changed?

iTunes Search API returns all version of Customerreviews in spite of currentversion
 
 
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