FrameMaker 2015 Structure | Cannot update font name after save

Hi All,

I have edit font name to "AnsanaUPC" and save file FM 2015 (Type Structure) after save and reopen file it appear font name same as before (original font name) it look like cannot update font name in some place.

For open FM to non structure it can show as normal.

My environment:
- Windows 10 Pro 64bit
- FrameMaker 2015

Can you please help me solve this? Thank you.

Best regars,
Charl.s