EF - could not find a model

Question

I have 2 similar DBs. So, both DBs have tables AllowedDates and AllowedTimes (with the same structore). I try to connect to these 2 DBs in my project. I created first model (DB.edmx) for first DB and second model (TEX.edmx) for second DB. Also, I renamed to AllowedDateTex and AllowedTimeTex EntityTypes for TEX.edmx to prevent name conflict of classes. In result, I have error in any case on line:

        List<AllowedDateTex> allowedDatesTex = (from i in _dbContextTex.AllowedDateTexes select i).ToList();

Additional information: Could not find the conceptual model type for 'ITW2012Mobile.Models.AllowedDate'.

why it tries to use 'ITW2012Mobile.Models.AllowedDate' and how to fix it?

I use the latest version of EF.

[ADDED]

My connection strings:

<add name="DefaultConnection" connectionString="data source=(local);initial catalog=JSAVIP;Integrated Security=True" providerName="System.Data.SqlClient" />
<add name="ITW2012Entities" connectionString="metadata=res://*/Models.DB.csdl|res://*/Models.DB.ssdl|res://*/Models.DB.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=(local);initial catalog=JSAVIP;Integrated Security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
<add name="TexEntities" connectionString="metadata=res://*/Models.TEX.csdl|res://*/Models.TEX.ssdl|res://*/Models.TEX.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=(local);initial catalog=fsmf2012;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

call a second model:

    TexEntities _dbContextTex;
    _dbContextTex = new TexEntities();
    var a = (from i in _dbContextTex.AllowedDateTexes select i).ToList();

(on third string I get the error "Additional information: Could not find the conceptual model type for 'ITW2012Mobile.Models.AllowedDate'.")

defined AllowedDateTex etc:

namespace ITW2012Mobile.Models
{
    using System;
    using System.Data.Entity;
    using System.Data.Entity.Infrastructure;

    public partial class TexEntities : DbContext
    {
        public TexEntities()
            : base("name=TexEntities")
        {
        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            throw new UnintentionalCodeFirstException();
        }

        public DbSet<AllowedDateTex> AllowedDateTexes { get; set; }
        public DbSet<AllowedTimeTex> AllowedTimeTexes { get; set; }
    }
}

namespace ITW2012Mobile.Models
{
    using System;
    using System.Collections.Generic;

    public partial class AllowedDateTex
    {
        public AllowedDateTex()
        {
            this.AllowedTimes = new HashSet<AllowedTimeTex>();
        }

        public int DayID { get; set; }
        public System.DateTime Day { get; set; }

        public virtual ICollection<AllowedTimeTex> AllowedTimes { get; set; }
    }
}

namespace ITW2012Mobile.Models
{
    using System;
    using System.Collections.Generic;

    public partial class AllowedTimeTex
    {
        public int TimeID { get; set; }
        public int DayID { get; set; }
        public int Hour { get; set; }
        public int Minute { get; set; }

        public virtual AllowedDateTex AllowedDate { get; set; }
    }
}

EDIT 2:

I decided to remove EF-models at all and recreate it. When I add first EF-model - all is ok. When I add one more with tables, which have the same names, as in first EF-model then classes from first model are recreated!

Thanks