Data Sync / Profile Sync Question

Dear Tuan,

I have the following config set up :
 
I also have two custom fields that have the following settings:
 
However, when I create a subscription in the backend for a user who already has another subscription... these two fields also get populated...

Any thoughts... ? I would like the name / address / phone etc to be synced across all the subscriptions ... However I don't want these specific custom fields to be populated... as they are different for subscriptions...