I am using LibreOffice 6.1, which as of writing, is the most up to date version.
I have a spreadsheet with 6 tabs. I have defined print ranges on all sheets, but decided that I didn’t want to print sheet 5 and 6. So what I did to sheet 5 and sheet 6 was to Menu - Format - Print Ranges - Edit… then modified Print Range from -entire sheet- to -none-.
I save the file, close and reopen.
When you go to sheet 5 and 6, then Menu - Format - Print Ranges - Edit* - you would see that the Print Range is back to -entire sheet-.
Why is this so?