We reported the bug October 2011 and it's taken a while but it's been added to the list of fixed bug to IsoDraw M020. Also the M030 release of IsoDraw is going to be released in July.
Also IsoDraw 7.3 has been added to the product calender (it has been for some time) and is scheduled for a release in Q2 2012. This is rather exciting, but we don't have any news about what new features might be added to 7.3.
Remember that there will only be maintenance release of IsoDraw 7.1 until June 30, 2012 and that the standard support is ending on December 31st of 2012. What that means is that if you still use IsoDraw 7.1 after December 31 2012 and find yourself with a major bug, we cannot get help from PTC to solve it. And if you find bug after June 30 2012 we can still get help from PTC to solve the issue, but it has to be a major bug for them to release a fix for it.
So if you still use IsoDraw 7.1 you should really start thinking about upgrading to IsoDraw 7.2. There is of course the option of paying for additional support after December 31 but that still means that you eventually, sooner than later, will have to upgrade to 7.2 or 7.3.
