In one workbook, I have 66 graphs that get updated each month. There are 5
graphs displayed per tab.

To update the graphs each month, I update the links to the graph file and
then check all the graphs to ensure they have been updated before I save and
close the file.

However, when I reopen the graph file, I discover that some of the graphs
are no longer updated. Out of 66 graphs, only about 10 - 15 don't get
updated. I then update the links again and then all the graphs look good
again, so I save and close the file.

But once again I reopen the file and find still some more graphs no longer
updated, about 5-10 this time... this goes on and on until all the graphs
remain stable.

Can someone tell me what's going on and what can I do to fix it.

Thanks, Mary-Lou