CalcLockAt a glance: A photo can have several meaningful dates. Compare the actual image and source information before using its place in a list as proof that an import failed.
Identify which date you are remembering
You may remember taking a photo in June, saving it from a message in August, and importing it into a vault in November. All three dates describe something real, but they are not interchangeable. A newly saved old photograph can appear among recent additions even though the scene is years old.
Before troubleshooting CalcLock, locate the source in Photos. Apple’s information view can show the capture date and time, filename, and other details. Note the values relevant to your question rather than changing them immediately. If you are looking at a screenshot of a photograph, the screenshot is also a separate item with its own history.
Check the source sort order
Apple Photos lets you sort the library by the date items were added or the date they were taken. Inspect the active order and any filters when searching for the source. A different sort can explain why an item is far from where you expected it.
Do not assume CalcLock uses the same ordering rules or exposes every Photos sorting option. Its job is to hold separate local collections, not reproduce every view of your source library. Search the collection visually and inspect likely items before repeating an import simply because the newest thumbnail is not at the top.
Use identity, not position, to compare copies
For a small group, compare recognizable content: the scene, crop, orientation, and distinctive details. If two versions look similar, check for edits such as a removed border or changed brightness. A file count and a screen position are weaker evidence than opening the intended image.
Keep a neutral batch record when importing photographs from several dates. Record which source group you selected and which destination vault you used. That lets you distinguish an ordering question from a genuinely skipped item. It also reduces the temptation to import the same group repeatedly and create confusing duplicates.
Correct dates only for a clear reason
Apple provides ways to adjust a photo’s date and time in Photos. That can be useful when the source date is genuinely wrong, but changing dates solely to force an app’s display order can obscure the original history. Decide whether you are correcting factual information or trying to improve organization.
If dates matter for a family archive, travel diary, or another important record, retain an independent source copy and note deliberate changes. Do not expect a later source edit to update an existing CalcLock import. The app does not synchronize its collections with Photos, so copies can diverge over time.
Close the loop without losing originals
Once you find the imported image, mark the batch as checked rather than continuing to reorder the source until the two apps look identical. If an item is genuinely absent, retry that specific source and inspect the result. This is safer than treating unfamiliar order as a reason to clear a collection.
CalcLock has no export, backup, or restore. Preserving the source library or another independent archive remains necessary even after dates and item counts make sense. A well-organized vault is convenient for viewing; it is not a replacement for the original history you may need later.
Questions, answered
Will changing a date in Photos update the vault copy?
Do not expect it to. CalcLock has no synchronization feature, so treat an existing import as a separate copy.
Should I import the same photo again if it is not first in the list?
Not until you have checked the collection. Its position alone does not show whether the import succeeded.