I have 3 x ex4300-48p switches configured in virtual chassis I tried to upgrade from the current Junos 13.2X51-D30.4 to 14.1X53-D35 which succeeds, all nodes reboot successfully one at a time and become operational but no VLANs are up

Virtual chassis forms fine

show vlans - just returns nothing, like nothing is configured.

The only error messages I get on console and in the log are:

gbr-sw1-re0 fpc2 vlan-id(32768) to bd-id mapping doesn't exist in itable gbr-sw1-re0 pfex: vlan-id(32768) to bd-id mapping doesn't exist in itable gbr-sw1-re0 fpc1 vlan-id(32768) to bd-id mapping doesn't exist in itable gbr-sw1-re0 fpc0 vlan-id(32768) to bd-id mapping doesn't exist in itable

bd-id = bridge domain ID ?

The config checks out, it's all there and complete, no comments post upgrade so nothing has changed. I just couldn't figure it out in the small downtime window I had so reverted to the backup snapshot (nice feature, works well!).

Helpfully a Google doesn't return anything helpful for this error message, and I'm just wondering what my next steps could be?

I thought I could try a factory reset and re-apply the config, does anyone else have any ideas?

Thanks