Hi Alexandre,

I’m glad you figured it out. Your example shows nicely that the track by 
feature works as a charm!
There is still something that has to be added, the track by feature 
requires an unique identifier.
As an example, it you don’t have an unique ID, you can combine it with the 
name like this:
<tr ng-repeat="a in actualArray track by a.id+a.name">. As an alternative 
you can also do
<tr ng-repeat="a in actualArray track by $index"> but then it’s not binded 
to your data at all.

Regards
Sander

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