Do modifier's from Facilities count on existing units?
When a new facility is built, which modifies a unit's morale or defensive rating, do existing units benefit? For example, if I have 3 probe teams from City 1, and I then build a Covert Ops Center, do my existing probe teams get a +2 morale upgrade?
No, if you have built the covert ops centre after the probe teams, they will not get a modifier. The only exception to this is the Children's Creche, which gives any units in that base a +2 morale bonus.
Is it +2? I thought it was cancel all negative modifiers, instead you get +1 morale bonus.
You should also be aware that the CC modifier applies as long as you are within your territory, to any unit that has a CC in it's home base. In other words, the manual is wrong, it doesn't only apply to when you are in base, and it doesn't matter if you're in a base with a CC unless it is your home base.