Description of problem:
Guided Decision Tables editor reports that "Mortgage Calculation.gdst" artifact from bpm-example-app has impossible matches. Many errors of the following form are reported in the editor UI:
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The impossible match is on row 2 for field creditScore of pattern Applicant.
Conflicting conditions are creditScore >= 660 and creditScore < 680.
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The GDT seems valid to me. Perhaps those are false positives? Clicking 'Validate' button for the table shows "Item successfully validated".

Version-Release number of selected component (if applicable):
BPM Suite 6.2.0 ER2

How reproducible:
Always

Steps to Reproduce:
1. Install bpm-example-app (download http://dev138.mw.lab.eng.bos.redhat.com/candidate/brms-6.2.0.ER2/jboss-brms-bpmsuite-6.2.0.ER2-quickstarts.zip , unzip and follow instructions in jboss-bpmsuite-example/README)

2. Open guided decision table 'Mortgage Calculation.gstd' in editor

Actual results:
The Analysis panel in the editor displays error "Impossible match" for almost every row of the decision table (see screenshot)

Expected results:
All assets in the demo should be valid with no warnings/ errors reported