I hope you are doing well.
Changing gig sometimes, it effect the results but it primarily depends on exactly what you have activated or what you didn’t…
Just take it as an example:
For example you changed the title a little bit, it effect can be seen on SEO and it takes 48-hours to maximum, still, it depends on your niche, tags been used as keywords, etc.
Next example if you would like to change description part, just remember it will not effect the ranking/impressions until you have sufficient stuffing keywords and combination of titles in it.
Third example and the last, if you would like to change the price list of your Gig services then 100% it will change ranking placement automatically without further notice. And if you would like to change the image to attractive images; then if you optimize it thoroughly then it 's OK but if it didn’t match with your previous image then just slightly it effect the ranking but it is also OK.
I didn’t know anything about Fiverr much but I hope, I just share a very valuable sharable key ideas.
I hope it will help many sellers.
Let me know if I am right or wrong. If I am wrong, Please take this ideas in a very POSITIVE sense.