I have never been able to successfully use the "Include PDF" option when packaging files. I usually package, then export the pdf using my presets, then combine the files in the finder because the pdfs never come out correctly. It seems the problem is only with how it renders ai files. Color mode doesn't matter. The same thing happens whether or not I choose High Quality Print, Press Quality, PDFx1a, etc. Any solutions for this yet? It has been the case since the "Include PDF" feature was first released.  Example has exported pdf on the left, and package generated pdf on the right. Screenshots of preflights show the pdf exported using package files shows all .ai files are now low res vectors using exact same preset. Using Adobe Indesign 18.5 but have had this problem in every version since the "include pdf" feature was released.