The possibility to create a new catalog is one of the features which make fotoARRAY to stand out. It lets you create a catalog of a selection of your images and pass it on. This feature can also help to organize a collection of images into just few directories which was previously distributed to many directories.
The new release makes it possible to hide albums and keywords when copying files to a new catalog.
Use the context menu in folders or keywords (right click on the gear button) and select "hide all non selected items".
This will hide all other keywords temporarily.
When you export into a new catalog select the mode "only used" for keywords and albums. This will reduced the number of items to only include the names used by any of the images. Also the currently non visible keywords and albums will be excluded.