I have 3 tables in my database like this:

In my ASP.NET Mvc app. I use entity data model.
When I convert database to entity data model TBL_VOTES_ARTICLE table is not converted. Others are converted.
Why this is happening?
Thanks.
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what kind of Visual studio are you using??
I would try to rename the table TBL_VOTES_ARTICLE to TBL_VOTES_ARTICLE1 some time it helps if not you have to go to sql server manager I would try to add a new primary key TBL_VOTES_ARTICLEID make it identity and remove primary key from two other fields