Loopback and Bridge do not work together

[SAslanis]

Country A has System A
Country B has System B

System A and System B are connected via a bridge

Now in System A i create a generic looback sip trunk (127.0.0.1) in order to forward specific numbers to extensions.
When the loopback trunk is active i loose connectivity to the bridge
When it does not exist everything works ok!

Any ideas?

PS my problem would be easy to solve if the system allowed for more to 9 digits to strip with just an outbound rule!