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- LVCompare and LVMerge should be unlocked with the LabVIEW base edition. Or even better, an open source merge and compare tool could be released to the community.

In the world of C it is up to us to declare variables such as those Refnums as 'volatile' so the compiler knows they may change despite the appearance of being loop invariants. I would say it is a bug that the LV compiler does not treat Refnums as volatile. I'd say most of your workarounds would work, but are in (slight) danger of being optimized away as the compiler improves. Personally, I'd drop an 'Always Copy' node instead of the IPES.

I actually don't care enough for LV to get triggered by the first sentence. But the last one... 😡