Hi Michael,
Thank you for contacting Syncfusion support.
We have analyzed your query and currently we don’t have a support for “Merged Cell In SfDataGrid”. A support incident to track the status of this query has been created under your account. Please log on to our support website to check for further updates
https://www.syncfusion.com/account/login?ReturnUrl=%2fsupport%2fdirecttrac%2fincidents
Please let us know if you require further assistance on this.
Thanks,
Ashok