After router relaod - eBGP prefix is vaild but not best - next hope is reachable

[g114112118s]

My topology is very simple using platform 4500x, i have few eBGP peers via SVIs. All the peers were fine and all of SVIs were receiving prefixes. However when we reloaded the router (no config, no IOS change), noticed that after the router reload, one of the BGP peer has received 0 prefix. On investigation found that BGP peer received prefixes (sh ip bgp nei x.x.x.x received-route). But those prefixes are not getting installed in RIB (sh ip bgp nei x.x.x.x route). Noticed that there is no rib failure. Next hope is still reachable. Tried to clear BGP soft sessions. But no luck... it seems as the received prefix is not best, it is not installing in routing table. My understanding is that as next hope is reachable, prefix should be the valid & best but for this prefix it's not a case. just wondering where could be the issue? And what suppose to be my next step.?

[g114112118s]

Do you only have ebgp peerings or do have also ibgp ones?

=> It's a redundant setup..so also have ibgp neighbor

Do have have synchronization enabled

=>  IGP synchronization is disabled

Are these prefixes being advertised from anywhere else?

=> it's unique per site

Do you have any IGP running?

=> Yes, OSPF

Have you tried a manual shutdown of the peering ?

=> Not yet, but tried clear ip bgp neighbor & soft reset

RouterA#

BGP routing table entry for 10.128.0.0/9, version 3

BGP Bestpath: compare-routerid

Paths: (2 available, best *2, table default)

Advertised to update -groups:

    1 2 3 4

Refresh Epoch 1

Local, (received .6 used)

10.0.192.7 (metric 3) from 10.0.192.7 (10.0.192.7)

Origin IGP, metric 0, localpref 100, valid, internal

rx pathid: 0, tx pathid: 0

Refresh Epoch 1

Local

10.0.194.14 from 0.0.0.0 (10.0.192.8)

Origin /GP, metric 0, localpref 100, weight 32768, valid, sourced, local, best

rx pathid: 0, tx pathid: Ox0

RouterB#

BGP routing table entry for 10.128.0.0/9, version 3

BGP Bestpath: compare-routerid

Paths: (2 available, best *2, table default)

Advertised to update -groups:

   2 3 5 6

Refresh Epoch 1

Local, (received & used)

10.0.192.8 (metric 3) from 10.0.192.8 (10.0.192.8)

Origin IGP, metric 0, localpref 100, valid, internal

rx pathid: 0, tx pathid: 0

Refresh Epoch 1

Local

10.0.194.10 from 0.0.0.0 (10.0.192.7)

Origin IGP, metric 0, localpref 100, weight 32768, valid, sourced, local, best

rx pathid: 0, tx pathid: 00