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I noticed that the current APP for Gmail will be discontinued and replaced on May 22nd with a new APP.
The new APP seems ok but is missing the search function found in the current APP.
I ...
I currently use a third party gmail-->dropbox extension that lets me search for a folder when I want to save a file. It looks like you're disabling it in a week. The third party extension is better because it lets me search for a folder by typing. The official integration requires me to navigate my folder hierarchy manually each time.