Steps to reproduce:

1. Create a new Article and go to the "Intro" field.
2. Create a new Facebook tag - type: http://ibexa.co and 100.
3. Click on the cog icon to preview entered attribute values.
4. Click on edit in the popup a change attributes to something like: ibexa.com and 200 and save.
5. Click on the cog icon again - one will be presented with old attributes.
6. Remove the Facebook tag and create a new one.
7. Leave fields empty and save.
8. Preview attributes with the cog icon.

Result:
One is presented with old data in the attributes preview popup.

Expected result:
Each change of attributes should be reflected in the attribute preview popup after clicking on a cog icon.