Flatten to XML bug with unit variables in classes

[Kyle97330]

Hi,

I just spent about 5 hours trying to figure out why some of my class data kept resetting itself to zero.  Turns out that the part that kept resetting was the part that had a unit variable in it, and that fails to load properly from the Unflatten From XML VI.  It works fine if it's just a cluster, it's being in a class that's the problem.

 

I've attached the zip file with the example VIs.

Could I ask that someone with LV 2014 try this to see if the bug exists there?  

Right now we're running 2011, but we plan a companywide shift to 2015 as soon as it comes out (and therefore, 2011 drops from extended support).  I'd like to know if I can just wait for the upgrade and then it will work, or if I need to redo about ~15 variables in classes with units on them that I had been counting on loading and saving using the built-in XML functions.

[UliB]

Hello,

I ran your VI on LabVIEW2014SP1 and have to say that the bug is still there.

UliB

[Sam_Sharp]

Have you raised a support request with NI? Sounds CAR-worthy to me.

[Kyle97330]

I was planning on trying for a CAR only after confirming the problem hadn't been quietly fixed in the last 3 years.  I couldn't find anything in the changelogs but sometimes you never know...

Now that UliB has confirmed it's still a problem I will likely do so.

[Ben_Co]

This is a known issue with the unit variable in Unflatten from XML, but I have added this forum post information to the exisiting CAR #291163.

[Kyle97330 · Accepted solution]

For the benefit of any future people who have the same problem and find this post, NI contacted me and let me know that as a workaround if a numeric is placed in a cluster inside of the class private data control, it will flatten and unflatten successfully.  I confirmed this works by adding a 3rd member to my example.