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Continue to ChatQuery : Can FontLab edit and output a webfont without losing data? A font vendor who shall remain nameless sold me a webfont under the premise that all modern browsers would support switching the old https://vmapp.org/query/7573/Can-FontLab-Edit-And-Output-A-Webfont-Without-Losing-Data-A-Font-Vendor-Who-Shall-Remain-Nameless-Sold-Me-A-Webfont-Under-The-Premise-That-All-Modern-Browsers-Would-Support-Switching-The-Old/