Replacing concatenated values from related table

I have two tables that come in from Sharepoint online lists. One of the fields is a multi select lookup value (called "App") from the other table and when Power Query brings it in it brings it in as a list, which I then extract to comma delimeted values. The problem is that rether than bringing in the name of the app, it brings in the ID of the app's record. I ultimately end up with a concatenated list of app IDs rather than their names. How can I replace the app's IDs with their names? Example:

Table 1:

Table 2:

Desired result for Table 1: