symbol keyframe hide feature not working when exporting to mp4
Hi
I am very new to Animate and am having trouble with symbols that should be hidden (hide function on frame) appearing when I export.
Here are some screenshots to hopefully explain it better

1. Christmas clothes symbol is set to hide under frame options. (which it is doing so )

2. this image shows the random objects appearing when they should be hidden.
Am I doing something wrong by hiding and revealing the symbol in the timeline?
Each symbol has its own layer and I have inserted keyframes when and where I need the symbol to either appear or disappear.
I know the timing is very poor but I would love some advice on what I am doing wrong
Belinda
