Update function in Toucan 2.2.1

I have been using the update function in version 2.2.1 for a while now and kept using it even when V3 came out, because v3 the update function was removed. My question is why was it removed and is there a way to use the latest version to do the same as the update.

What I want to do is update the source directory to a destination but only copy the newer files to the destination and not delete anything off the destination. If the files are newer on the destination I don't want the source files to copy. Any idea's.