EDIT: found out I didn't understand how UUIDLeast and UUIDMost worked. I thought it picked a random unused value between the two, rather than referring to most and least significant bits. Ignore this ticket.
If you have two identical pieces of armor, each with the same attribute modifiers, and then you wear one and hold the other in your hand, upon either holding something else or taking the armor off the attribute modifier disappears, despite still coming from the other piece of armor.
Comments 5
They both UUIDLeast=10000 and UUIDMost=20000. I have done this many times so I doubt they are the same. However (and I think this is the issue), they both have the same name.
Both need to have different UUID or only one item will give the bonus. It does not matter if the item name is the same as long as the UUID are different then they will work together.
Bo the modifiers on each item have the same UUID? If so they need to be different.