When importing a PDF, when the window pops up that asks you if you want to import into the current document or make it a new document, you should be able to change the file name in that window when you switch from the default “import to current document” to “import as new document”. Currently, if you choose to import it as a new document, it won’t let you change the file name until after you import. Would be more streamlined to allow this at the import phase rather than after.