I am making a database and after a small amount of progress I save it and then copy and save with same name but with an extension V1, V2 etc. so that I can keep a working one as backup. Throughout this process I have come across 'Error accessing Network' connection may be lost.....! I have to go back to my previously saved version and redo the changes I was making. This time I didnt save until I was about to make my usual backup and I had quite a few changes. How can I stop this happening and make my last DB work again.