The following instructions are from VRBO and can be found on their help forum here.
1. On VRBO
- Sign into your VRBO account
- Click Calendar
- Click Export Calendar Data
- Copy the URL
2. On Uplisting
- Select the listing on Uplisting you wish to sync with the VRBO listing above
- Select the 'Connect' button on the VRBO row
- Paste the iCalendar link copied from VRBO (above), shown in figure 1 below.
- Click 'Next sync availabilities' button to export your unavailabilities to VRBO (instructions below).
Figure 1. Import bookings from VRBO using iCalendar