Every affix has which slots it can appear on selected very carefully. If any exalted could go with any unique, this would bust wide open and we would have to start doing some silly things like nerf cooldown and mana regen affixes by 75%.
As others have said, it doesn't need to match sub types. The base type has to match and they can't have conflicting class requirements.
Also, if you can put them in the cache together at all, it worked. It checks if they are compatible right when you place them in. I suspect that you might not have done the last step of time traveling.
If they are incompatible, it will tell you why.
Also, julra always drops a pair of items which can be used to make a legendary item.