Hi,
we didn’t remove the Export PDF function, but… we simply replaced PNP4Nagios entirely in the Raw Edition (thanks to the PNP4Nagios community (@pitchfork) for developing it in the first place) with our own graphing.
The Checkmk graphing does not have a PDF export as the entire PDF generation is done via the PDF reporting engine (Generating and sending reports in Checkmk). This is only available in Enterprise Edition (reporting is typically an enterprise feature).
Thus, if you really want PDF exporting of your graphs, I would recommend moving to the CEE.
EDIT: Just checked the Raw Edition and saw that the PNG export option only exists in the Enterprise Edition. Thus took out the sentence relating to this.