Once you have made a decision to perform a roll back from the
archive, you must then decide what form you wish the roll back
to take. Do you wish to completely replace a particular notebook
or notebooks with the contents of the archive you have selected?
This is a drastic action and you would lose any changes you have
made to the notebooks since the Archive was made.
Do you wish to roll back only a small number of pages or folders?
This is far less drastic and if you do this you will be given
the option of not overwriting existing pages with pages of the
same name, but simply renaming them so both can exist side by
side.

Completely replacing the specified notebooks is only advisable
if the archive you are replacing it with is very recent. Perhaps
you made the archive earlier in the day and have now decided to
undo some large changes you have made to a notebook. You should
first mark the notebook or notebooks for roll back by selecting
them using the Select button, then press the
Roll Back to Selected Notebooks button.
If you decide to only roll back a small number of pages or folders,
these should be marked for roll back by selecting them in the
same way.
You should then press the Roll Back Selected button.

The dialog that now appears gives you three options to chose
from.
If you are doing a complete rollback to one or more notebooks,
the first option Replace Selected Notebooks will be pre-selected.
This completely removes notebooks with the same name as those
you are rolling back to and replaces them with those form the
archive. This option will not be available if you are rolling
back to selected folders and pages, or rolling back to a partial
archive. Unchecking this option will enable the further options
below.
The second option: Do Not Overwrite Existing Pages
will be the default option if you are rolling back a select few
folders or pages, or rolling back to a partial archive. This means
that if a page with the same name already exists in your current
Notebook, the page from the archive will be written alongside
it with a slightly different name, for example: "My
page" and "My page ARCHIVE".
You will then be able to examine both side by side to determine
which you wish to keep or how you may wish to go about merging
them.
The final option: Overwrite Existing Pages will replace any
pages with the same name with the corresponding page found in
the archive. You would then lose any changes made to these pages
in the current Notebook since the archive was made.
Once you have made your selection, click on the Perform
Rollback button to run the retrieval and replacement
process.
Before rolling back, a fresh archive is always taken automatically.
This means that if you have made the wrong choice in how to roll
back, you can always restore your notebooks to where they were
before the rollback by performing a single complete rollback of
all notebooks from the new latest archive at the top of the list.