Why can't I deploy translation for a metadata owned by a managed package?

Question

I retrieved a translation metadata via the Metadata API with the following package.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>*</members>
        <name>Translations</name>
    </types>
    <version>57.0</version>
</Package>

What I got was the following da.translation file:

<?xml version="1.0" encoding="UTF-8"?>
<Translations xmlns="http://soap.sforce.com/2006/04/metadata">
    <customApplications>
        <label><!-- Accounting --></label>
        <name>Accounting</name>
    </customApplications>

    <!-- some more lines of XML here -->

    <quickActions>
        <label><!-- New Case --></label>
        <name>New_Case_Quick_Action</name>
    </quickActions>

    <!-- some more lines of XML here -->

</Translations>

What I did next was setting up the label for the New_Case_Quick_Action Quick Action and then deploying it back to the same Environment. Couldn't do so, though, as I received an error:

In field: name - no QuickAction named New_Case_Quick_Action found

After an investigation, it turned out that it is a managed package-owned Action on the Account object. It creates a new Case. I can translate it in the Translation Workbench at the "Override" section.

I don't mind translating some components manually, but does anybody know why were they retrieved to the da.translation file in the first place if they are impossible to deploy? Is there any workaround to this problem?

Possible hint (?): It's a Sandbox created out of the already functioning Production environment with a couple of packages installed. Maybe I should reinstall some?