There are several options that control how Phototheca imports photos and applies logic to the task.
Skip small images during Import
When this option is set to On, Phototheca won’t import images with a width or height of less than 100 pixels. This may be useful if you want to import a folder with images from the web that may have many small images that have no value.
Do not copy existing photos from memory cards
When this option is set to On, Phototheca won’t copy images from removable drives that were imported earlier, and will not create multiple duplicates that waste space on disks.
Phototheca keeps track of all removable media by their serial numbers, so there is no confusion even if photos have the same filenames but originate from different memory cards.
Do not copy photos from network shares
When this option is set to On, Phototheca won’t copy photos from network shares or NAS; instead, it will just remember their locations and build thumbnails. Generally, this behavior is exactly what is needed. If for any reason you would like to copy photos from an NAS to a local drive, turn this option off.
Do not copy photos from removable drives
When this option is set to On, Phototheca won’t copy photos from memory cards or smartphones; instead, it will just remember their locations and build thumbnails. Usually, you want to copy photos from removable media so would keep this option off.
Do not create new Events, but use existing when finding new photos in known folders
If you have the auto-tracking feature set to On (Track for new images) then Phototheca automatically imports all new photos silently. This option regulates if you create a new Event every time when new photos are detected or add them to an existing Event.
Let’s say you have a folder called “Vacation 2019” that was imported as a single Event, “Vacation 2019.” If new photos are added to this folder and auto-tracking is on, Phototheca can either add them to an existing Event or create a new Event — that’s what is being controlled by this option.