Seems this issue has been auto resolved. now all nodes are coming on correct site in NEP.
Site Node Type Manufacturer Node Id Node Name Site
Default Site IDU Nec 10.154.146.75 MAK2307 - FSW003 MAK2307
Default Site IDU Nec 10.154.118.73 RYMK0538 - 1 RYMK0538
Default Site IDU Nec 10.106.162.11 BUR0062 _DIA BUR0062
Default Site IDU Nec 10.154.162.231 BSA0447 -2 BSA0447
Default Site IDU Nec 10.76.117.158 RAF9808 -ALARM RAF9808
Default Site IDU Nec 10.74.86.100 HFB0027 #2 HFB0027
Default Site IDU Nec 10.154.135.49 MK2 - 5 MK2
Default Site IDU Nec 10.99.249.97 MAK0123 - 1 MAK0123
Default Site IDU Nec 10.158.215.214 ULTB0417 -1 ULTB0417
Default Site IDU Nec 198.18.53.10 JIZ0008 _MDIA JIZ0008
Default Site IDU Nec 10.158.215.215 ULTB0418 -2 ULTB0418
Default Site IDU Nec 10.3.145.194 YNB2956 - YNB6098 YNB2956
Default Site IDU Nec 10.154.111.129 KHU0652 - IDU #2 KHU0652
Default Site IDU Nec 10.154.100.57 JD2 - IDU #A2 JD2
Default Site IDU Nec 10.154.89.129 NODE2 RING18 - MDN6030 NODE2
Default Site IDU Nec 10.154.23.74 DAM0985 _4 DAM0985
Default Site IDU Nec 10.70.137.19 CRIY0398 - A CRIY0398
Default Site IDU Nec 10.1.162.193 MAK0323 _ MAK6065 MAK0323
Default Site IDU Nec 10.154.89.133 MDN6030 -MDN0785(RING18) MDN6030
Khaled Khalil, kindly assign this jira to someone to work on same