Building Upgrades Not effecting existing buildings?

How do I make a newly researched tech (improved masonry) immediately increase the stats of all existing buildings?
Ive already given the buildings the ability (Improved Masonry).
Its showing that they have upgraded but they arent getting the increased hit points or anything.....

-Val

Does it work on newly created ones?

Yes, all newly created units are reflecting the upgrades.
I just tested it.
So any existing troops or structures are not benefitting from upgrades. Only newly created ones.
This is is custom AOS map i have created. I am using triggers to control computer allied teammate unit upgrades.

Has anybody else ever encountered this problem??
Ive seen it done and working in other maps properly.