I am trying to connect external list based on OData to Outlook, I could create it, but can't map its fields to Office Item type because it is invisible in SPD2013.
I've made screenshots of all the steps to repeat the issue.
**STEP1. Create BDC model. You can skip this step and download bdcm file here**
1. Create new SharePoint 2013 app project.
2. Add new Item / Content Types for an External Data Source
3. Add test OData service info.
4. Select the only entity - Regions
5. Press the Deploy button (to generate WSP where we can get bdcm file), like it shown in
this article.
At the end of this step I have BDCMetadata.bdcm file, which I get from the myproject.wsp\MyFeature\External Content Types.
**STEP2. Import the model to Business Data Connectivity Service.**
1. Go to the Central Administration \ Application Management \ Manage Service Applications \ Bussiness Data Connectivity Service \ Import.
2. Choose my bdcm file and press the Import button.
3. After that I can see my model in Web Browser.
But I can't see it in SPD2013. 
**What I tried**
- press the refresh button, trying to make a clean installation of the SPD to another machine. Result is the same, I can't see it.
- create External list using a web browser (Settings \ Add an app \ External list). I could see external content type 
and even could create list, which worked well.
I can see this external list in SPD2013 too, but all the same I can't see the external content type.
**Does anybody have any ideas?**
Every suggestions are very appreciated.
**UPDATE1**: Maybe there is another way to map external content type to the Office Item type without using SPD?
PS: I am not sure if it is a right place to ask this question. If somebody sure it is better to place it in the SharePoint 2013 - Using SharePoint Designer, InfoPath and Other Customizations thread. Let me know.