Created attachment 178228 [details] Source ODS Printing / exporting a file with 0 in a number field is output as null
Created attachment 178229 [details] Screen shot of source fields Source Doc screen shot
Created attachment 178230 [details] Exported values screen shot fault occurs from LO Export to PDF or printer Microsoft Print to PDF
The page style it's set up to not show zeroes. Change it in Menu/Styles/Page/Sheet - Zero values. Please best send your question first to ask.libreoffice.org
Created attachment 178233 [details] Zero print on page style
I've had Pirnt Zero checked for more than a decade. I r enginerr Zero is a valid value and is not Null
At opening your first attached ods, it has not marked 'Zero values' in page style, and the sheet has no zeroes in any cell. After marking works fine for me.