Update Product Data in Analytics Ecommerce reports - google-analytics

Question

Some time ago I have implemented Google Analytics Advanced Ecommerce using GTM DataLayer.
After year of usage we have decided to change Naming of products and Added categories/brands for each transaction, also was changed all SKU/ID.
But nothing changed in reports. Names of all old products still remains old, no Brand/Category included in reports.
How can I update Product Data in reports and add categories/brands?
Thanks!
PS New products seems to be OK, but also no Category/Brand.
Here is example of DataLayer:
// Product Details
dataLayer.push({
'ecommerce': {
'currencyCode': 'EUR',
'detail': {
'products': [{
'name': 'Tetris', // Name or ID is required.
'id': 'g395',
'sku': 'g395',
'category': 'Toys & Games',
'brand': 'Mojo-jojo!'
}]
}
}
});
//// Transaction
dataLayer.push({
"ecommerce": {
"currencyCode": "EUR",
"checkout": {
"actionField": {
"step": 4
}
},
"purchase": {
"actionField": {
"id": 13202,
"affiliation": "www.mojo-jojo.com",
"revenue": 0.01
},
"products": [{
"id": "g105",
"sku": "g105",
"name": "Duracell AA",
"brand": "Mojo-jojo!",
"category": "Accessories",
"price": 0.7,
"quantity": 1
}]
}
},
"transactionId": 13202,
"transactionTotal": 0.01,
"transactionProducts": [{
"id": "g105",
"sku": "g105",
"name": "Duracell AA",
"brand": "Mojo-jojo!",
"category": "Accessories",
"price": 0.7,
"quantity": 1
}],
"event": "transaction",
"product_ids": [105],
"num_items": 1,
"conversion_value": 0.01
});

Answer 1

Google analytics data is read only. As soon as the data is inserted you can not change it / updated.
However now that you have changed it any data being inserted from now on will contain the new names.