I cannot move a list element from the Chart of Accounts

I created a new account name and of course the latest name created would appear on the top most list however, I would like to move the new account so that my chart of account will be in alphabetical order but it does not allow me to do it. A message: "You cannot move a list element unless the list is in its original order. Click the lists diamond column header to return the list to its original order".

This just happened recently but previously, I was able to move the new account name..

Please help.

Thanks,

Liza