Big hello for you too my friend 
My 2 babies are taking all my attention! I am missing my old times here!
See, you have to understand when you have posted your GL account in 2013 you had only balance information stored. It means you have no data stored in table BSIS. When you activated Line item display this issue stands.
You won´t create entries in BSIS if you check that flag. Thus you only will have items from now on.
Have a test. Post new entries and check. they will appear.
Best Regards!