So, if you change the data from which the pin map was made, close and reopen the file, you should still see the same point objects as before the data changed. The symbols used for the points could change if they were based on data in the file and posted data labels could change, but it would still be the same set of point locations as before.
To update the pin map in MapViewer 8, click Home | Data | Reload for the pin map layer. In MapViewer 7, click File | Reload Data.
Older versions of MapViewer did not have the File | Reload Data command. To reload the data in these version, select the Map | Pin Map command or click on the pin map icon on the toolbar. In the Pin Map dialog, on the General tab, click the open file icon next to the current file name. Choose the same file name and worksheet as before, then click OK to close the Pin Map dialog. This recreates the pin map from the new data.
Updated October 6, 2016