You can open your previously saved maps either by clicking on the "Open Saved Maps" tab on the "Locate by" dialogue box or by clicking the Open button 
located in the top left hand corner of the screen.
Promap allows you to search for and open previously saved files. There are three different ways of finding the file you are looking for:
Recent – Provides a list of your 10 most recently accessed files
Browse – Lists the folders in which you may browse for your file
Search – Allows you to search all your saved files using a keyword or grid reference
When you open a previously saved file, the file will be loaded at the point where you saved the map or aerial photograph, along with all the map layers and aerial photographs that have been accessed or activated.
Should you wish the Locate by box to automatically open to one of the three search options above see To change General Settings
See also
To open a saved file by browsing