Current behavior:

• It is possible to import Alt Text from MS Excel, PowerPoint and Word by enabling the option "Import other text" but this import a lot of other text as well

 
Requested behavior:

• It is possible to import Alt Text only - via a separate import option

 
Use case:
Alt Text helps people with visual impairments understand pictures and other graphical content. When someone uses a screen reader to view documents, they will hear Alt Text; without Alt Text, they will only know they've reached a picture without knowing what the picture shows.
Using the current  "Import other text" option imports also other redundant text, which leads to higher word counts and costs that need to be avoided.