Clip volume envelope line is stuck

[Kallithea]

I rearragned a few spliced clips in one track, and now those clips have a lower volume that cannot be changed. The volume envelope line is completely stuck; I can neither move it nor add control points to it on the rearranged clips. Is there any way to regain control of the volume on those clips? 

[SteveG_AudioMasters_]

In the Multitrack menu, do you have Enable Clip Keyframe Editing enabled? That's exactly what will happen if you don't...

[Kallithea]

Thanks for the reply. Yes, I do have keyframe editing enabled, and it works only on the clips of the track that weren't rearranged.

[SteveG_AudioMasters_]

If you select one of the clips you can't do anything with and go to Clip>Clip Gain, can you adjust it at all this way? So far, I've failed to reproduce this issue at all...

[Kallithea]

Yes, using the Clip Gain will adjust the volume, but the volume line still remains disabled.