The CollectiveAccess data import reader component, which allows another CA system to be used as a data source for an import (Eg. CA-to-CA imports) is broken in a number of ways:
1. Doesn't support https
2. Most mappings fail, including nonpreferred labels
3. Does not support tags
4. Expects a version of the Guzzle HTTP client that we haven't used in a good long while.