Is it possible to change multiple items in once?

[yellowjs0304]

Hi, Thanks for excellent work.

Can we change multiple items like dragging them and changing the labels into specific label?
I have A, B, C, D .... N(like 100 classes) on labeled data, and I need to change them into "Z" at once.

If you have any ideas, please let me know.

[Ynjxsjmh]

IMO, you can use regex or something to handle the json file directly.