Blog Feed only fetches current year posts ?

[Ehsan Sajjad]

I have my blog linked with my codeproject account, my 4 posts are synced and got published on codeproject, they all are written in 2015 but i have a old post on my blog which i have updated recently and when i am adding the tag which i added to previous posts for getting consumed on codeproject, the post is not getting consumed. It looks like it only cosuming current year posts ? why it is not consuming post earlier than 2015?