A cell completely formated as bold
(probably <si><t>High Ward</t></si> in the xlsx source)
results in cells with not rendering information:
(while inline formatting is converted into hi/@rend).
I assume that the problme lies in https://github.com/TEIC/Stylesheets/blob/dev/xlsx/xlsxtotei.xsl#L181-L193 where there seems to be only a mechanism to resolve date formats and not the pointers to /styleSheet/fonts/font via @fontId or other style information (alignment, number format, fill, border).
A cell completely formated as bold
(probably 
(while inline formatting is converted into
<si><t>High Ward</t></si>in the xlsx source) results in cells with not rendering information:hi/@rend).I assume that the problme lies in https://github.com/TEIC/Stylesheets/blob/dev/xlsx/xlsxtotei.xsl#L181-L193 where there seems to be only a mechanism to resolve date formats and not the pointers to
/styleSheet/fonts/fontvia@fontIdor other style information (alignment, number format, fill, border).