It seems that the APP/DEP frequencies are not available anywhere except the PDF of the CSUP. In foreflight its readily available. In Avare (not x) it occasionally appears in a remarks category, but seemingly only if there are two. My research shows this has been an issues since 2016 at least.
Is there any change APP/DEP frequencies can be added to the in app CSUP in AvareX. It looks like it should be fairly easy to extract from the PDFs as the relevant lines in the pdfs all contain "APP/DEP".
For example 6D6 is included as an attachment.