Description of problem:
See summary.
When there are multiple DRL files in a project and one of them is invalid, running validation on any of these DRL files will return results for the invalid DRL file. If there are more invalid DRLs, the validation result for any of them will show errors in all of them.

Version-Release number of selected component (if applicable):
BPMS 6.0.1 ER1

Steps to Reproduce:
1. In a project, create DRLs drl1, drl2, drl3.
2. Validate any of them - validation is successful.
3. Make drl1 invalid and save, run validation on all 3 DRLs - each time you get errors found in drl1.
4. Make drl2 invalid as well, save and again, validate all 3 DRLs - for each file, validation results show errors from both drl1 and drl2.