G/L Calendar Maintenance

Our management has decided that rather than perform our March '07 
month-end on 3/31/07, they want to perform it on 3/30/07 instead.  Upon 
going into 31/GLA Calendar Maintenance, I change the monthend date from 
3/31/07 to 3/30/07 and do an F8 to update and get a message "Warning - Gap 
between Years".  What's that all about?  I can either do a F8 to update or 
F12 to go back to the previous screen.

If I do a F8 will this cause a problem?  I just want to make sure that if 
they happen to invoice anything on Saturday, that it doesn't go into the 
wrong G/L period.  Can anyone help?

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