Does root property of dataadpater not work when using mvvm datatype : “observablearray”?

[delebashParticipant]

Compare two sources the first works the second doesn’t

First source
var source = {
datatype : "observablearray",
datafields : [{
name : "__KEY"
}, {
name : "__STAMP"
}, {
name : "ID"
}, {
name : "firstName"
}, {
name : "middleName"
}, {
name : "lastName"
}, {
name : "ContactType",
map : 'ContactType>name'
}],
id : '__KEY',
localdata : model.items.peek().__ENTITIES
}

Second source

var source = {
datatype : "observablearray",
datafields : [{
name : "__KEY"
}, {
name : "__STAMP"
}, {
name : "ID"
}, {
name : "firstName"
}, {
name : "middleName"
}, {
name : "lastName"
}, {
name : "ContactType",
map : 'ContactType>name'
}],
id : '__KEY',
root : '__ENTITIES',
localdata : model.items
}

Please see this fiddle for working example, then change localdata : model.items.peek()._ENTITIES to localdata : model.items and add root : ‘__ENTITIES’, I thought that this should have the same results?

Thanks,
Dan

[Author]

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