I have been playing with Portfolios, seeing if there is any way to get the files within a portfolio to stay in alpha order rather than entered order. I have two portfolios, in which one works and the other doesn't. They look different, and I don't know what I did differently.
You might check the order in which the files in the portfolio are sorted.
Right click on any file thumbnail on the left and choose 'Sort by > Name' to arrange in alphabetical order.