Heloo,
For a cisco catalyist switch 4500 which is added in NCM, i have the last configuration change shown in the "Config List" view is 4 April 2017 although the switch admin did some configuration changes on 24 April !
Anyone knows why this last configuration change happened in 24 April is not shown in the "Config List" resource view and also it is not shown in the "Last 5 Config Changes" resource ?