When making changes, Billing Assistant is designed for generating one bill at a time. I suspect that the issue is, when you switch it to multiples it loses the changes to the single matter by design. If you make changes and generate a bill for just that single client, does it work as expected? 

I normally don't have to edit a batch of bills done here.  In this instance, the client has about 20 matters that generate on a consolidated bill.  So, I go through and make he edits to hold charges on about half of the bills.  Billing Assistant shows me the "overview" screens that are exactly what I want.  However, when I actually then generate the bills to display or print, TS goes nuts and invoices all of the "unselected" charges.

This is a horribly design flaw since Billing Assistant clearly let's you do these kinds of edits, it preserve the edits as you move between the matters and then - WITHOUT WARNING - it does something quite different than what is reflected.

Hi John,

What steps are you using to print bills?

Here's what I tried and it seemed to work.

- I opening billing assistant and viewed the list of all my clients.

- on the Billing Assistant List, I set the Rule to "All Clients" and then marked only the first two clients.

- on the Billing Assistant Details, I moved to the Fees: Time Slips section for the first client and unmarked all but one slip.

- on the Billing Assistant Details, I moved to the Costs: Expense Slips section for the first client and unmarked all but one slip.

- at the bottom of Billing Assistant Details, I marked Generate Bills, chose Display, and marked All Selected Clients.

- When I clicked the Print button, only those two clients printed, and only the marked slips appeared on the bill.

What steps might you be doing differently?

- Start with Billing Assistant (shfit-Ctrl-B)

- That displays both Billing Assistant List (BAL) and Billing Assistant Details (BAD) for the client that is currently highlighted on the BAL.

- I normally work down the BAL to select clients that will be in the billing batch.  In this particular example, I was working on a master client with about 20 matters all generating a consolidated bill.  For purposes of this reply, since I finally got the invoices done yesterday (by manually "holding" the charges outside of BAL and BAD), I am testing on a client which has unbilled time.

- Select Generate Bill on BAD and send to display with NO unselected slips.  All slips show up as expected.  

- I closed the Print Preview and went to BAD, selected Fees:Time Slips and unselected one slip.  The Total Fees on the BAD is reduced correctly.  

- I then select Generate Bill to Display.  The Print Preview opens and shows the proposed bill.  The "unselected" slip appears on the bill and the total fees includes the unselected slip.

- If I select Pre-Bill Worksheet - same problem!  The BAD overview is right but the prebill the unselected slip.

- If I close BAL and use only BAD, same results - prebills and displayed bills do not match the overview if I unselect time or expense splips.  Both prebill and generated bills include the unselected slips and have the wrong total.

The only way I can "unselect" a slip and have it work correctly on the bill or prebill is to go to each slip and set it for HOLD; then generate the bill and finalize it.  Then, however, I have to go edit each held slip to remove the hold.

If you are clicking the "GENERATE BILL"  button on the bottom, you are leaving the billing assistant and using a non-Billing Assistant report to generate the bills.

Are you clicking the printer icon?  That will result in what you want to have happen where the slips are not printed. This was tested using build 25.5.12.389 of Timeslips 2017.

Unless, the bill is already in the Revision stage, and then it will print the original bill regardless of your selection.

That makes absolutely no sense.  The "Generate Bill" and the "Pre-bill worksheet" buttons are part of the Billing Assistant Details screen.  That is what I always use.