Site2Site Problem - more connections

Hi,


i have got a problem with Site2Site VPN (SSL).I would like to connect to two different VPNs, but its not possible. See the problem below. Both tunnels were closed by the UTM, because of "username attempted to change from"

2016:02:15-00:48:04 example openvpn[24761]: REF_AaaUse1/::ffff:1.2.3.4 PLUGIN_CALL: POST /usr/lib/openvpn/plugins/openvpn-plugin-utm.so/PLUGIN_AUTH_USER_PASS_VERIFY status=2
2016:02:15-00:48:04 example openvpn[24761]: REF_AaaUse1/::ffff:1.2.3.4 TLS Auth Error: username attempted to change from 'REF_AaaUse1' to 'REF_AaaUse3' -- tunnel disabled
2016:02:15-00:48:04 example openvpn[24761]: REF_AaaUse1/::ffff:1.2.3.4 TLS Auth Error: Auth Username/Password verification failed for peer
2016:02:15-00:48:04 example openvpn[24761]: REF_AaaUse1/::ffff:1.2.3.4 TLS: move_session: dest=TM_ACTIVE src=TM_UNTRUSTED reinit_src=1

Is it bug?

Thanks in advance.