I am using adwords api v201605. I am trying to attach sitelink using matching function to particular adgroup. I am using matching function of type
CONTAINS_ANY(FeedAttribute[feedId,feedAttributeId],{'nike shoes'})
I have a feed item in my feed which matches with this matching function. When I see adgroup extensions all I can see is 'custom settings' and not actual sitelinks which are mapped to this adgroup.
Refer this screenshot for more information

When I use matching function of type
IN(FEED_ITEM_ID,{1000001,1000002,1000003})
I can see actual feed items mapped to particular adgroup.
Refer this screenshot for more information

Why am I seeing 'custom setting' in first case? Is there anything wrong with my matching function?
CONTAINS_ANY(FeedAttribute[12345678,0],{"Mars cruise","Venus cruise","Moon cruise"})