If you want to manage the attribute 'Ships from' in a bulk and apply these changes to all products with this attribute - this option will be very useful for you.
Go to AliDropship -> Settings -> Manage attributes:
Click blue button with text you need or enter the name of the attribute in a search field:
If you have products with attribute 'Ships from' you will see the attribute and its values:
You can delete the whole attribute clicking on the trash icon near the name of the attribute:
Or you can delete one of the values of 'Ships from' attribute:
Or you can rename the attributes and its values:
To apply changes click 'Update products':
Changes are applied: