Steps to reproduce the error:
1) Configure the zabbix with nodeid bigger than 100 (in my lab I test with node ID 101, 102, 121, 998)
2) Create a MAP with many links between hosts (in my lab I test with 5 hosts and 6 links)
3) Save and close the map
4) Open the map
5) Try to edit a link
The edition not works with message (on browser console):
"TypeError: that.links[that.currentLinkId] is undefined
var linkData = that.links[that.currentLinkId].getData();
" (on line 507 of - /jsLoader.php?ver=2.0.6rc1&lang=en_US&showGuiMessaging=1&files[]=class.cmap.js&files[]=class.cviewswitcher.js&files[]=servercheck.js

We test this in 6 zabbix servers.
In 4 of this servers apear the same problem, in 2 not apear.
The 2 "box" without problems have Low NodeID (2 and 11)

I will attach the screenshot and XML for tests.

We test using Chrome and Firefox and Windows and Linux.