Custom routing done to the first 2 output channels of an LV2 plugin: those settings are saved. Reload the project, the custom setting is recalled as expected.
Custom routing for any output beyond the first 2 outputs (outputs 3+): the custom routing information is saved, but when reloading the project, the default channel mapping is also restored for those channels. This leads to a duplication in mapping anything beyond output channels 1-2.
This of course needs to be tested with an LV2 plugin that has more than 2 outputs.
I'm using Reaper for Linux x86_64, Manjaro 21.0.7, and this problem was
confirmed by someone else running Ubuntu 20.04.
DrumGizmo has 16 outputs.
https://drumgizmo.org/wiki/doku.php?...ting_drumgizmo
LSP "Multi-Sampler x12 DirectOut" has 12 outputs.
https://lsp-plug.in/?page=download