They don't it is a global setting and what's even more odd is that some projects under the global one where they were created work fine, while other projects have this same issue. I've checked all the dates and I'm uncertain where to look to figure out what's going on with this. I'm more than happy to share print screens of what's going on
Project Tree:
Working fine for the Phoenix Project and sub Projects
Not working for the HRP Program Project:
Working for the ShiftSelect (Top parent project) Not working for Blackfyre (subproject in ShiftSelect
Time Boxes set up with Global reference
Timebox details: