Hi, If I want to create new variables and then revert to the "preserved" dataset, is there a way
to do this without doing any saving and merging of data? Basically, I have a large dataset that I
preserve and then do a bunch of manipulations on a subset of the data, including creating several
new variables. I would like to merge these variables with the original (larger) dataset, and
assign missing values to the variables that are in the larger dataset but aren't present in the
subset of the data I was working with. I know that normally saving the subset of data and doing a
merge with the original preserved data would be the intuitive way, but I was wondering if there is
any other way to do it without doing a save of the subset of the data.
Thanks,
Florence
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