The MIDI learn mode works to link a physical controller (expression pedal) to a waveform legacy effect (lowpass filter) but this assignment disappears if the rack (instrument + filter) is saved as a preset.
Other assignments in other plugins (ie Kontakt) work fine as saved Waveform presets.
Windows 11
Waveform Version 13.5.21 (Built: 15 December 2025) (64-bit)
Waveform Free
[TRACKTION WAVEFORM] Assigned CCs saved as presets don't work with built-in effects
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- KVRist
- 374 posts since 18 Nov, 2023
You would need to report this bug (any bug) to Tracktion. Here an the user-to-user forum it will not be seen by Tracktion.
Ask on the support page at the bottom left the chat bot for the address of the support form.
Ask on the support page at the bottom left the chat bot for the address of the support form.
Classical guitar --> Line Audio CM4 @ SSL12 --> KDE-Plasma @ Debian-Linux --> Waveform PRO 13.5
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- KVRian
- 500 posts since 3 Dec, 2021
I'm had a quick try with the legacy low pass filter in a rack like you said. the midi learned assignment to the filter dies when I delete the rack and reinsert it. I tried assigning a macro to the cutoff and doing midi learn to the macro. When I deleted that rack and reinserted it the midi assignment was not visible, but touching the controller nuked Waveform instantly. I've had trouble in the past getting Waveform to save midi learned parameters and kinda stopped trying. For the amount I need it I can just relearn them. Not much help, sorry.