As mentioned on the Discord, the routing orders cannot save any stack sizes placed in the filter bar that exceeds 128 items, whatever they may be. This leads to issues, since the Take Exact option relies upon using the system where you can increase the amount of items beyond a single stack in a single slot in the filter bar. In other words, it ignores other stacks of the same items in different slots in the filter bar, reducing Take Exact to a hard limit of 127 items max.