Hi Breno,
Based on the provided explanations, you need to change the Group Header when the group has been broken due to paging with (part of) the last value from the previous page.
Currently this is not possible with Telerik Reporting out-of-the-box.
You can show when a group continues from the previous page, but won't be able to reference the data row from the previous page, or implement a custom paging behavior.
Regards,
Todor
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