I am also having the same issue.  WE migrated from the Desktop Pro version to the online version and now all of my former inactive accounts are showing on my reports (Balance Sheet, etc)  In the Desktop version I could inactivate these former accounts and they would not be shown on the reports.  I could also have the option to activate the account again if needed.  I viewed the tutorials on the help page for custom reports and I also do not show the drop downs they show on the video.  There is a checkbox for activate and inactivate but it doesn't do anything.  All these account that I want to deactivate have a ZERO Balance and there is no need for them to be shown.  Why can't they just be hidden like the other version was able to do???