R-Series Tenant - Need to change Vlan tag

Hello Dave, in my opinion the quickest thing to do would have been rewriting VLAN tag in the F5OS tenant, I'm pretty sure you can do it via command line. This way, every object that references the VLANs that are already configured wouldn't have required any change.

Since you've removed VLANs from the tenant already, then you'll need to manually look for objects that still reference the old VLANS, and then update the configuration to reference the new vlan.

You're likely to find them in these objects:

• Every SELF-IP in the "Network > Self IPs" menu that was referencing the old VLANS must be updated to match one of the new VLAN names
• There might be some VLAN-restricted Virtual Servers that requires updates (quickest way to find them would be CLI command: tmsh list ltm virtual all vlans ). If this is your case, you'll need to modify the "Enabled Vlans" list excluding the old objects
• When you're done with these two steps, try deleting the VLAN object from Network > VLANs menu. If it still won't let you do it, 
• There might be some other objects as well that reference those VLANs in the config file, after you "fixed" the two points before, try running this CLI command: more /config/bigip.conf | grep "VLAN_NAME" -B10 to see what object it is and go fix it