3.15.1 Copy>Replace/Merge Plots

3.15.1 tested on RH4 and HogPC.

Select a Plot in the Plots Directory, COPY it to an existing plot.
The RECORD OPTION pop-up window appears:
INSERT works as expected.
REPLACE doesn't replace the destination plot with the source plot, and there is no command line info suggesting the task hasn't completed.
MERGE doesn't merge the source plot with the destination plot, and
there is no command line info suggesting the task hasn't completed.

I didn't expect MERGE to work... but I thought REPLACE would, and am surprised that there is no warning on the console that this task has failed.

Dan