Fail castle model on strat map

[StaefanBatory]

Hi, I use a teutonic models and textures for castle and city on campaign map (and battle map) from kingdoms teutonic.
I create a special folder for teutonic in:
data\models_strat\residences\faction_variants\teutonic_order
and
data\blockset\textures\faction_variations\teutonic_order

And I set in few town as faction creator teutonic_order.
One example, for Thorn:
descr_strat.txt :
settlement castle

{
    level town
    region Thorn_Province

    year_founded 0
    population 2400
    plan_set default_set
    faction_creator teutonic_order
    building
    {
        type core_castle_building wooden_castle
    }
}

and look, all is ok, when I start campaign game. Castle (or city) is good, model is as creator teutonic_order.

Spoiler Alert, click show to read: 

But when I upgrade a castle (when I play Poland), model change to eastern european model, look:

Spoiler Alert, click show to read: 

I want still a teutonic model in this castle. Not eastern european or other culture models.

And my question: What is wrong, or what I forgot add? Could someone help? Thanks for up

[Gigantus]

That is perfectly normal. The stratmodel of a city\castle will change to the culture of the owner when it gets upgraded. Example: if Egypt would hold London and upgrade it, then you will get a middle eastern strat model.

[Ishan]

That is perfectly normal. The stratmodel of a city\castle will change to the culture of the owner when it gets upgraded. Example: if Egypt would hold London and upgrade it, then you will get a middle eastern strat model.

True & the changes also take place on the battle map as well.

[StaefanBatory]

Hmm... Maybe you have a ration. Thanks !