Updates:
Status: Invalid
Comment #1 on issue 948 by pekka.klarck: Running selected cases from
multiple test suite
http://code.google.com/p/robotframework/issues/detail?id=948
1) You said you tried first
pybot --test TC1 Suite1.html --test TC2 Suite2.html
and then
pybot --test TC1 Suite1.html --test TC2 Suite2.html
but I don't see any differences between them.
2) You must have all options before the data sources as explained in the
User Guide:
http://robotframework.googlecode.com/hg/doc/userguide/RobotFrameworkUserGuide.html?r=2.6.1#using-command-line-options
3) For more information about using --test option see:
http://robotframework.googlecode.com/hg/doc/userguide/RobotFrameworkUserGuide.html?r=2.6.1#selecting-test-cases
4) Please use robotframework-users mailing list for questions.