Strange thing happened with my sales invoice naming series.
Series keep autoincrementing even if you delete previous invoice.
I.e. my last submitted number was RA-2016 -00010 after creating a draft RA-2016 -00011, and later deleting it, next draft should get the number RA-2016 -00011. It got RA-2016 -00012. Strangely SINV- series seems to work ok.
Tried updating series number (it seems it doesn’t work), restart, clean browser cache…
It is vital for me, that the numbers do not skip series.