This item has been identified as an outstanding known issue. A workaround is provided until the issue is officially fixed.
In the New UX when deleting a value(s) from a grid every future value is deleted. This only occurs when using line items as a nested (inner) dimension.
Pivot the dimensions of the grid so that Line Items are not the inner nested dimension.
If this workaround is not suitable in your use case, please contact Support at email@example.com.
Internal Reference: DBC-1666
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