Hi Peter,
Thanks for your patience.
We fixed the reported issue "Unable to export the group of icons as SVG format and few SVG data only generated". Now the selected icons are exported properly in the SVG format. Replace the MetroStudio.exe file into your installed metrostudio location. Could you please check the issue in the modified exe and let me know if the reported issue has been resolved or not?
Installed location: C:\Program Files (x86)\Syncfusion\Metro Studio
Please refer the modified exe from the following location:
Please let us know if you need any further assistance.
Regards,
Thirupathi B.