Okay I have figured out why it wasn't trunking.

For whatever reason it needed a native vlan setup.  meaning that it wants to pass untagged packet across the trunk.  Cisco calls it native vlan.  this is for old hardware that usually need to pass packet this way... but normally in my network I don't really use it.

What I did was create another VLAN, 4000, (using VLAN 1 = BAD) and made sure both ends of the trunk will pass untagged traffic using VLAN 4000.  Set the TPLink PVID for 4000 and tagged the rest of my other vlan.

Now for the management interface....

I semi figured out how to move the interface over but it's not reporting itself because the switch itself doesn't allow you to specify a gateway for the vlan interface.  I moved the webgui from 192.168.0.1 VLAN 1 to 10.0.254.8 VLAN 254, it can only be access directly on the switch, no where else on the network.

Anyone know a way to configure it so I can get in-band management??

 I figured out the last part as well.

I guess it was just easier to do it in CLI than trying to figure out the WebGUI.

(although, I really wish the CLI is more Cisco-like)

Anyway.... to fix my issue I just did a

SG2008P>en

SG2008P#show ip route  # noticed there is no route

SG2008P(config)#ip route 0.0.0.0 0.0.0.0 10.0.254.1 1 #create an all route to gateway

SG2008P#ping 1.1.1.1

Pinging 1.1.1.1 with 64 bytes of data :
Reply from 1.1.1.1 : bytes=64 time=20ms TTL=54
Reply from 1.1.1.1 : bytes=64 time=30ms TTL=54
Reply from 1.1.1.1 : bytes=64 time=20ms TTL=54
Reply from 1.1.1.1 : bytes=64 time=20ms TTL=54

Ping statistics for 1.1.1.1:
    Packets: Sent = 4 , Received = 4 , Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
Minimum = 20ms , Maximum = 30ms , Average = 22ms

and done.