UFactory overwrite existing DataAsset [UE5]

Development Pipeline & Plugins Editor Scripting
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1

HI, I am writing my own Ufactory for a specifiic filetype to create a DataAsset from reading the dragged in file.

UP2CDnDFactory::UP2CDnDFactory( const FObjectInitializer& ObjectInitializer )
	: Super(ObjectInitializer)
{
	Formats.Add(FString(TEXT("p2c;")) + NSLOCTEXT("UTextAssetFactory", "FormatTxt", "Text File").ToString());
	SupportedClass = UChamberDataAsset::StaticClass();
	bCreateNew = false;
	bEditorImport = true;
	OverwriteYesOrNoToAllState = -1;
}	

UObject* UP2CDnDFactory::FactoryCreateFile(UClass* InClass, UObject* InParent, FName InName, EObjectFlags Flags,
	const FString& Filename, const TCHAR* Parms, FFeedbackContext* Warn, bool& bOutOperationCanceled)
{		
	UChamberDataAsset* chamberDataAsset = nullptr;	
	FString TextString;
	if (FFileHelper::LoadFileToString(TextString, *Filename))
	{
		chamberDataAsset = NewObject<UChamberDataAsset>(InParent, InClass, InName, Flags);	
	}
	
//parsing and filling the DataAsset
	Parser p = Parser();
	p.Parse(*chamberDataAsset, std::string(TCHAR_TO_UTF8(*Filename)));
	bOutOperationCanceled = false;
	
	return chamberDataAsset;
}

However this only works if the file is a new file. When I am trying to reimport a p2c file I get the error that the import failed without any logs beeing printed.
Any idea how I can ask the user if he wants to overwrite the existing DataAsset?

Thanks in advance!