To Individually Replace Cells Containing User Data

Select the Replace Cells tool (Drawing > Annotate > Cells > Replace Cells).
In the tool settings window, set Method to Replace.
In the tool settings window, set Mode to Single.
(Optional) Click the Cell Placement Options icon in the tool settings window to expand the tool settings.
In the expanded tool settings, turn on Replace User Attributes.
Select the cell to replace.
Select the replacement cell.
Enter a data point.
The old cell, including its user data, is replaced with the new cell and its user data.