replied on January 23, 2015
well, you can use the Token Collector and Token Retriever processes in Quick Fields to send information from one document class to another (or to the next instance of that document class). But it sounds like you want the check number from the check, not just a counter.
What you do is the ZoneOCR for where the Check is, but then select the document class (not it's subprocesses). From there, your right-hand panel should have metadata fields available or the option at the bottom right to select what fields to add. Once you have the field in question, you will be able to use the Token from the ZoneOCR.
You may wish to try out the process a few times and see what the results are. If you find that the results are inaccurate, you may be able to figure out an appropriate pattern match to use before using the token to set the field.