Copy, paste and overwrite individual attributes in existing effects in multiple clips.
Currently it's impossible to overwrite existing effects, and/or paste only specific attribute inside one effect. The only effects that can be overwritten are the ones that are built in, like Motion and Opacity, but even with them it's impossible to copy/paste just one individual attribute. There is a workaround for overwriting whole effects (with the Remove and Paste Attributes function), but there is no workaround for overwriting just one attribute inside an effect... It would have been extremely helpful, especially with multiple clips.