I found I could use Delayed Charges.  They are not as clean as pending invoices, but work sort of the same way.  I still have some issues with them though as they only sit on the customer record (I've yet to see a report to tell me all the delayed charges) so you have to make careful notes to yourself.  I also don't see that you can print them out like you could a pending invoice. 

I would tell you that this alone should not be a deal breaker... there are many other issues that QBOLE causes during migration from desktop, and you will need time to become used to it.  I migrated in March and spent time getting from Jan-March in while doing my regular work that it took a while.  I also still have to clean up the chart of accounts to match what I've known for over 20 years as migration does make change (as they point out - not directly apples to apples) I don't want to discourage you, but rather, make sure that you have a plan and time for cleanup activities while getting used to this new program.