A lot of people are asking for invoice numbering to be reset at the start of a year (for tax reasons).
In the latest version you can go to Settings > Advanced and set the following 3 options:
| invoice_incrementing | 1 |
|---|---|
| invoice_incrementing_next | 1 |
| invoice_increment_date_check | Y |
This will reset invoice numbering from 1 for this year.
Ultimate Client Manager