CalcLockAt a glance: Files is a browser for several storage locations. Know which provider holds the source and keep that source usable after importing.
Start with the location, not Recents
The Files app can show material from On My iPhone, iCloud Drive, and supported third-party providers. A single Recents view can mix those locations together. Before importing a private document, browse to its folder and identify the service or device location that actually holds it. This helps you understand downloads, permissions, and what a later deletion would affect.
Apple documents how to enable third-party cloud apps in Files. Their presence in the picker does not mean CalcLock synchronizes with them. CalcLock imports files into local vault storage; it has no cloud sync feature and does not turn an external folder into a continuously updated private collection.
Check that you have a complete source file
Open the source in Files while connected. Wait for any download to finish and inspect the actual content. For a PDF, visit the last page and look for missing scans. For a video, play a section near the end. If the file cannot open at its source, importing it is unlikely to resolve that underlying problem.
Confirm the filename, extension, and version before selecting it. Documents named final, final-new, and final-revised are easy to confuse in a compact picker. Use a harmless test document first if you have not imported from this provider before. A preview image or cloud placeholder alone is not proof that the full data is ready.
Import deliberately into the right collection
Open the intended CalcLock vault with its exact expression and two consecutive equals presses. There is no master vault directory, so check which collection you entered before adding files. Start with one item, complete the import, and open it in CalcLock. Only then proceed with a manageable batch.
File import support should not be read as a promise that every file type has a complete in-app viewer or editor. Check the format you actually need. An encrypted archive, a specialist design file, or an interactive document may require another application for useful access; keep the original workflow available.
Keep version changes visible
If you later edit the source document in its cloud folder, do not assume the previous vault import updates itself. Treat a revised file as a new version you must deliberately inspect and import if appropriate. Make the revision recognizable before importing so that two similar-looking copies do not cause mistakes.
Keep a simple record outside the vault of the source folder and revision date for important documents, without exposing private contents or the entry expression. This is particularly useful for reference material that changes occasionally. Avoid storing documents that require frequent editing in a workflow that cannot return edited files to their source.
Do not clean up the only original
CalcLock has no export or restore feature. Importing is therefore not a reason to delete the file from Files or disconnect its only accessible source account. If you need a long-term archive, preserve a usable independent source first and verify its access from outside CalcLock.
When an import fails, retain both the source and the current app installation. Check provider access, download completion, free device space, and a smaller sample. Repeatedly importing a large folder can create confusion about what completed; reconcile the expected items against the actual collection before retrying everything.
Questions, answered
Does selecting an iCloud Drive file enable vault sync?
No. CalcLock does not synchronize a vault with iCloud Drive or another provider.
Can I delete the Files original after importing?
Keep it or another verified independent original. CalcLock cannot export the imported file back out for recovery.