Dynamic queue members and theirs channel type

Hi,

Some time ago I have created queue in FreePBX Distro and I handle of dynamic agents with Local channel (like FOP2).

Today I saw that one unregistered SIP device has status in queue "Not In Use" but it was unregistered.

In addititonal I have added the same SIP device via cli asterisk (queue add memeber) but with SIP channel.

result was:

2503 (Local/2503@from-queue/n) (dynamic) (Not in use) has taken 1 calls (last was 5235 secs ago)
SIP/2501 (dynamic) (Unavailable) has taken no calls yet

I think it's not normal and is it FreePBX Distro problem or Asterisk?