I am actively trying to get one without sensitive data in it. Will post when I get it.

Uploading a sample XML file.

I want to get all ExportedObject where child ObjectValue has an attribute superClasses of Document

From W3 schools that query would be written like this

/ExportedObjects/ExportedObject[ObjectValue/@superClasses="Document"]

I have also tried replacing every element with the following syntax with no luck

/*[name()='element']

There was some weird line breaks in the sample file making it think that were a few unclosed tags.  Once I got that straightened out, it wasn't too bad.

This will give you all the nodes for superClasses="Document":

//ObjectValue[@superClasses='Document']

You don't need to have a full tree path, and that W3 syntax looks whack!

Then, just as an example, if you wanted the value of the LastModifier within that node:

//ObjectValue[@superClasses='Document']/Property[@propertyId="LastModifier"]/Value/text()

In the test file, there was only one node that had @superClasses='Document'?

You can validate this at http://xpather.com/

You don't really have to worry about namespaces unless nodes are prefixed.  As in:

<employee></employee>  vs. <i:employee></i:employee>

Hope this helps!

The website you provided Xpather.com works with the queries your providing, which is interesting, however ultimately I need to do this using Laserfiche's XPath engine which does not accept these queries

See screenshot

Also, the other XPath engines I have been testing with online, do not accept these queries. Try this one for example: https://codebeautify.org/Xpath-Tester

Why is xpather.com able to get results and no one else can, including Laserfiche?

The query you are entering is only selecting a node.  With this activity, you want to select a value.  What value do you want in that token?

I am trying to get the full path and metadata for each file. This is not all contained in values of elements, some of the data I need is contained in attributes such as the path and ID which references another node that contains the metadata.

This example only has 1 document with a full path of: 
/ADM Documents/Technology Services Documents/MOU/testdocument.pdf

So for each ObjectValue where one of it's elements named Property has an attribute classID="Document" I need:

• It's attribute objectID's value (let's call this masterID)
• It's parent elements child Property with an attribute called path's path attribute value
• It's parent elements child Property where attribute propertyID="ContainmentName"
• The Value of another ObjectValue with an attribute objectID=masterID's Property element with attribute propertyID="First_Name", etc for each field

Last time I had to do this was with an XML file that came from something called CD Plus and I used these types of queries without any issue.

/CDPlusDataSet/DistributionJobIndexes/DocumentID[text()='%(ReadXML_DocumentID)']/ancestor::DistributionJobIndexes/IndexValue