Hi,
I am trying to import the same application into the same dev environment. How do I do this without overwriting the existing applications?
How do I edit the branding of one application without changing them all?
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I'm not quite sure what you mean by "overwriting the existing applications". Applications aren't 'overwritten' as such - if you re-import an identical application with identical versions of an identical set of artifacts (as in, you export an app package from an environment and then immediately try to re-import it to that same environment), Appian will recognize that the objects are the same, and unchanged, and basically skip all of them. If a particular objects is the same but you're importing an app package with a different version, then that version will be imported as a new version of that object.
As far as your Branding question - can you describe a bit more about what "application branding" you're referring to?