Oh this is a sad topic. It seams that some hosts, sorting the parameters using a hash of the parameter ID, and storing the position of the hash in a sorted array, to identify the automation lane. (imho)
Long story short, even the slightest change of a parameter-id, or adding a parameter (even at the end) can completely destroy your automation.
Instead of fixing the problem (in the wrapper?/host?) the VersionHint was introduced, which it makes imho it more confusing, but it looks like it does not work.
So first rule, once you released a plugin, never change any plugin-ID, nor add/remove any parameters.
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