How to display existing value in v-autocomplete component?

Question

Vue.js

Small problem with autocomplete from Vuetify.
The fact is that if a value is written to the route.city variable by another method, the autocomplete does not display it.
That is, for example, when creating an order through autocomplete, I write down the value and all the rules, but when I update (by opening the created order), I cannot display the value in the autocomplete.

<v-autocomplete
    v-model='route.city'
    label='Город'
    :items='route.cities'
    item-text='name'
    item-value='uuid'
    @input.native='loadCities'
    @change.native='loadCities'
    return-object
    cache-items
    hide-no-data
  ></v-autocomplete>