In fact, the problem is not the router 10.0.5.11 but the switch on main site.
When I down the interface where is connected 10.0.0.204 and I type display display ip routing-table vpn-instance vpn_customerA, I get :
Routing Tables: vpn_customerA
Destinations : 7 Routes : 7
Destination/Mask Proto Pre Cost NextHop Interface
0.0.0.0/0 Static 60 0 10.0.5.11 Vlan1002
10.0.0.0/24 BGP 130 10 10.0.0.252 Vlan100
10.0.5.8/29 Direct 0 0 10.0.5.9 Vlan1002
10.0.5.9/32 Direct 0 0 127.0.0.1 InLoop0
10.3.224.0/20 Static 60 0 10.0.0.204 Vlan100
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
When I type display ip routing-table vpn-instance vpn_customerA protocol bgp, I get :
vpn_customerA Routing Table : BGP
Summary Count : 2
BGP Routing Table Status : <Active>
Summary Count : 1
Destination/Mask Proto Pre Cost NextHop Interface
10.0.0.0/24 BGP 130 10 10.0.0.252 Vlan100
BGP Routing table Status : <Inactive>
Summary Count : 1
Destination/Mask Proto Pre Cost NextHop Interface
10.3.224.0/20 BGP 255 0 10.0.5.10 Vlan1002
So, I understand that the route doesn't switch on the other site :(