Alterations but import does not contain complete article group...

 
 
Error:
{0} {1} has been modified, but the import does not contain the complete article group.
 
 
Explanation:
Certain fields may apply to a group of articles. If such a field is changed, all articles in the group in question must be included in the import file.
An example of such a field is the GroupImage.
 
 
 
Solution:
Add all articles of the group in question to the import file and import again.