I'm finding that when an Avenue 3 project is imported to Arena 4, many of the parameters are set to the correct type, but do not allow you to make adjustments to their values until you reset it to the same type, and then the parameter controls become unlocked.
An example:
A clip imported from Avenue may have the opacity set to be controlled by the composition audio, with a gain of about 60%, and a fall rating of about mid-way.
Once imported, the clip still is set to opacity adjust by comp audio, but the gain and fall are both at zero, and cannot be adjusted until you select "comp audio" again as the control source. Then the controls act as expected.
Imported Avenue Compositions
Re: Imported Avenue Compositions
During import, it also seems to lose any specific frequency settings for audio-driven parameters, with them all being reset to the default "L" values.