Robert L. answered 06/18/19
Adobe Illustrator private trainer
Hello,
I am not sure if this answer will really help you, but I will share it anyway.
After you make a selection with the elements you want to save, try this: File / Export / Export for screens.
In there you'll be able to save your selection you've just made into multiple file formats in the same time, but even in multiple sizes for each of them. You can choose for each file you save a file format as PNG, JPG, SVG or PDF, but you can also choose the scale of each current selection you are saving. You'll have to press Add Scale for each other format you want to add for save.
You can also open Window / Asset export, and you'll find every option in there.
I hope this helps.
Thank you and take care.
:)