I have uploaded my world on newer version and lost all progress

Hello, i have just switched my server from 1.12.2 to 1.14.2 and uploaded my saved world from older version and it loaded a world without any progress that i have made, but with all of my old equipment i had on me.

World looks just like when I started. I thought maybe it's because there is no compatibility with newer version so I switched it back to 1.12.2 and it still doesnt show any progress i have made.

What should I do? Of course I would prefer to play on newer version with building i have made

Oh and also my world is below 200mb. It has got about 150mb

Quote from SMASHERYT

Does the buildings also gone?

if yes, that's why you should make a backup before switching versions aternos can't get the world back but for future to sure world is safe read this: Keep your world safe

Yes, actually only buildings gone, because world looks the same and so is my eq.

I saved my world .zip before i switched versions and uploaded it on the newer one. Is there anything more i could do?