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BGP selection criteria in a VXR-G2 running SB code

Hi,

In brief, I have a VRF configured on a PE router which is a 7200-G2 router running 12.2(31)SB18, I import two route targets, one of them belongs to another VRF.

Now, when I receive two default routes from both VRFs, and my question is, why did the PE router preferred the default route from 192.168.253.252:20500:0.0.0.0/0 although it's the newer one as presented below (I have removed the RT and then added it again, so that the route becomes the more recent)

Any ideas?

pe1#sh ip bg vpnv4 vrf network 0.0.0.0/0
BGP routing table entry for 192.168.253.210:10:0.0.0.0/0, version 43143585
Paths: (1 available, best #1, table network)
Flag: 0x420
  Advertised to update-groups:
     3        
  Local, imported path from 192.168.253.252:10:0.0.0.0/0
    192.168.253.251 (metric 2010) from 192.168.253.110 (192.168.253.110)
      Origin incomplete, metric 0, localpref 100, valid, internal, best
      Extended Community: RT:20500:10
      Originator: 192.168.253.252, Cluster list: 192.168.253.110
      mpls labels in/out nolabel/719

pe1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
pe1(config)#ip vrf network                 
pe1(config-vrf)# route-target import 20500:20500 
pe1(config-vrf)#^Z

pe1#sh ip bg vpnv4 vrf network 0.0.0.0/0
BGP routing table entry for 192.168.253.210:10:0.0.0.0/0, version 43146664
Paths: (2 available, best #1, table network)
Flag: 0x420
  Advertised to update-groups:
     3        
  Local, imported path from 192.168.253.252:20500:0.0.0.0/0
    192.168.253.251 (metric 2010) from 192.168.253.110 (192.168.253.110)
      Origin incomplete, metric 0, localpref 100, valid, internal, best
      Extended Community: RT:20500:20500
      Originator: 192.168.253.252, Cluster list: 192.168.253.110
      mpls labels in/out nolabel/825
  Local, imported path from 192.168.253.252:10:0.0.0.0/0
    192.168.253.251 (metric 2010) from 192.168.253.110 (192.168.253.110)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Extended Community: RT:20500:10
      Originator: 192.168.253.252, Cluster list: 192.168.253.110
      mpls labels in/out nolabel/719

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