I have a number of issues (mostly user created) that I'm looking for suggestions on.  I was a previous user of Timeslips 2011 for approximately a year and a half and had not used timeslips again until recently so I'm struggling with a few things.  I'm currently using Timeslips 2015 to help a client.

I mistakenly APPROVED some statements hoping to "post" (if you will) all of the payments I'd processed.  I was hoping this would also allow me to print statements showing only open invoices (without showing payments also).  Now if I generate statements it's all or nothing.  If I leave the "Reprint Invoices" drop down at "None" nothing will print, not even the open invoices.  If I choose "Open - Not Fully Paid" it prints the payments and the open invoices.  Additionally, if I try to finalize the payments through bills those clients that don't have slips other than the payments I can't generate a bill.  Now that I've rambled here are my main questions:

1) Can I "unapprove" or somehow undo the statements that I've approved?

2) If I have payments that have not been on a bill and finalized can I run statements that ONLY show open invoices?

3) What is the best way to finalize payments so they don't show up on a bill or a statement?  My recollection is that it's easiest to run a bill and hold any slips then approve the bills that have only payments on them.  Can anyone provide additional suggestions?