I'm trying to use page range in map series with strange behaviour.
If I list all the pages, I need to export I have no problem. If I try to group a series of consecutive pages the problem start if is't not in first place.
No problem with this one.

But, if I make a second range, like grouping pages 5 and 6, Pro doesn't like it. It said that the following number, 9 in my example, is a duplicated one. I also try, after replacing 5, 6 with 15, 16 to use 15-16 and again Pro said that 24 is a duplicated one.

Also, if I try to make a series after the first place, like in the Pro example, I have the same result with, in the picture below, 9 is a duplicate.

So what's I'm doing wrong? Why can't I put more than one range nor putting the only range allowed not in the first place?