The Baretta

First off, if you can get the cash, pay for Nintex Workflows.  It is worth it's weight in gold.  I cannot stress enough how easy it is to build, copy, manage, update workflows with Nintex. Simply, you're wasting your time/life if you are still building workflows in SharePoint Designer. However, if you're just working out how to keep using an old reusable workflow and it's not showing up as an option to use in your list, here's how I got it to show back up. Add another Content Type to the list (even if just temporarily), this seems to force the list to check which Workflows are available for the Content Types in the List, and the workflow should show up again.

Most people can't find the 'Export to Spreadsheet' option from the Action drop-down menu due to not being on the Overview.aspx page. But if you've modified the Overview page via SharePoint Designer, then you've probably lost the Overview menu completely The solution is to create a New List View via SharePoint Designer and set it as Default (crucial!). Done. If you don't set the new view as the default page, then the Export option will still be missing.