Router in AngularDart - OnActivate is called again on caller component when navigate to another path/component - angular-dart

Question

I have a list component OrganizationsComponent and a detail component OrganizationDetailComponent (modal dialog) that using route to navigate.
When the navigation occur from list to detail [OrganizationsComponent (list) >>> OrganizationDetailComponent (detail)], the onActivate from list is called again (is the method from OnActivate interface).
I hoped that only onActivate on detail would be called, like is, but not of the list again (caller).
If this is a normal behaviour, is there a way to stop the calling this method onActivate of the origin, in this case, on the list?
Environment:
Dart SDK: 2.0.0-dev.43.0
Angular: 5.0.0-alpha+8
Angular_router: 2.0.0-alpha+8
Following the code:
LIST CODE (partialy):
-HTML
<div class="container-list">
<material-fab raised (trigger)="goToDetail(null)">
<material-icon icon="add"></material-icon>
</material-fab>
<br/>
<material-list class="shadow-box-material-list" elevation="2">
<div *ngFor="let o of organizations">
<material-list-item>
<div>
<h4 class="material-list-item-content"><strong>{{o.name}}</strong></h4>
<p class="material-list-item-content">{{o.code}}</p>
</div>
<span class="row-spacer"></span>
<div class="material-list-item-secondary">
<div>
<material-menu [menu]="menuModel" (click)="selectOrganization(o)">
</material-menu>
</div>
</div>
</material-list-item>
<hr>
</div>
</material-list>
</div>
<router-outlet [routes]="rotas"></router-outlet>
-DART
class OrganizationsComponent implements OnActivate, OnDestroy {
final List<RouteDefinition> rotas = [
new RouteDefinition(
routePath: AppRotas.appLayoutHomeRoute,
component: app_layout_home.AppLayoutHomeComponentNgFactory,
useAsDefault: true
),
new RouteDefinition(
routePath: AppRotas.organizationDetailRoute,
component: organization_detail.OrganizationDetailComponentNgFactory,
),
new RouteDefinition(
routePath: AppRotas.organizationDetailAddRoute,
component: organization_detail.OrganizationDetailComponentNgFactory,
),
];
final Router _router;
List<Organization> _organizations;
OrganizationsComponent(this._router);
// ** HERE IS CALLED AGAIN WHEN NAVEGATES TO DETAIL (calling goToDetail() method) **
#override
onActivate(routeStatePrevious, routeStateCurrent) async {
_organizations = await _organizationService.getOrganizations();
}
#override
ngOnDestroy() async {
_appLayoutService.searchEnabled = false;
}
void goToDetail(Organization organization) {
if (organization == null) {
_router.navigate(AppRotas.organizationDetailAddRoute.toUrl());
} else {
_router.navigate(AppRotas.organizationDetailRoute.toUrl(parameters: {
AppRotas.organizationUuidParameter: organization != null ? organization.id : null
}));
}
}
List<Organization> get organizations {
return _organizations;
}
// ...
}
DETAIL CODE (partialy):
-HTML
<modal [visible]="true">
<material-dialog headered class="headered-dialog">
<div header>
<h3>{{labelOrganization}}</h3>
</div>
<material-content>
<material-input class="width-300" [(ngModel)]="organization.name" floatingLabel [label]="labelName" required [requiredErrorMsg]="msgValorRequerido"></material-input>
<material-input [(ngModel)]="organization.code" floatingLabel [label]="labelCode"></material-input>
</material-content>
<div footer>
<material-button (trigger)="saveOrganization()">{{buttonLabelSave}}
<material-icon icon="save"></material-icon>
</material-button>
<material-button autoFocus (trigger)="goBack()">{{buttonLabelBack}}
<material-icon icon="arrow_back"></material-icon>
</material-button>
</div>
</material-dialog>
</modal>
-DART
class OrganizationDetailComponent implements OnActivate {
final Location _location;
Organization organization = new Organization();
OrganizationDetailComponent( this._location);
#override
Future onActivate(routeStatePrevious, routeStateCurrent) async {
if (routeStateCurrent.parameters.isNotEmpty) {
var uuid = routeStateCurrent.parameters[AppRotas.organizationUuidParameter];
if (uuid != null && uuid.isNotEmpty) {
organization = await _organizationService.getOrganizationById(uuid);
}
}
}
void goBack() {
_location.back();
}
}