Libre Draw
PDF opened in Draw, then saved
Win 7 6.0.3.2
The original PDF had Helvetica font but Helvetica is not installed on system. Font appears in italics. The rendered font looks like Liberation Sans. (BTW, Liberations Sans was the default font in LO in Styles),
I went to Tools / LibreOffice / Fonts and entered Helvetica to be substituted by Arial. Always box is checked and Apply Replacement Table is checked.
There is no change. The characters do not seem to match a style since changing default style from Lib. Sans to Arial also did not work.
The net is I want all the Helvetica fonts (all sizes) to be Arial.
Al