Can I harness value of processing instruction like <?xm-replace_text?>

Hi,

I have some xrefs in my content to GUIDs that are not in my publication.

While the linked to GUID is not in my publication, I can still see the title of that topic presented in HTML vlew in Publication Manager and in Oxygen XML view with processing instruction as 

<?xm-replace_text Topic Title Value?>

I can see this processing instruction in the exported file on the Tridion server as

<p
cid="Im9CG"
class="- topic/p ">Local Link Cross reference with no display text <xref
href="GUID-********.xml"
class="- topic/xref "><?xm-replace_text Topic Title Value?></xref></p>

But it doesn't end up in related temp file on the server.

Is there any way I can access and use this value in my transform?

Any advice appreciated,

Regards,

Ann