Peakto can sometimes have some difficulties to detect changes in a CaptureOne catalog, because CaptureOne Pro does not store information about the change events that happen during the lifetime of a catalog.

One way to greatly improve this, is by using XMP sidecar files in CaptureOne.

A sidecar is simply a text file stored next to an image that holds information about the edits and the metadata of an image. Because this file changes as soon as an edit is made to a C1 managed image, Peakto will reliably detect those changes.