Originally Posted by user_none
It was a requested feature. When setting the series it will auto increment. This way if you add a new series you set the first book it sets the number to 1. Set the next book it sets the number to 2 and so forth. There is no way to disable this behavior.
I think there is something broken here.
What you see is not what you end up with
1) I added my January Webscription from Baen
2) I used the Meta-data Editor to update Notes and set the series on each title
3) I corrected my errors
When I looked later, the series_index for those titles was incremental from 1
Not all were even in the same series.