hello I would like to rebuild my attachment thumbnails,

I understand this would be under system > tools & settings?

yet I do not see this option on my admincp, i'm confused were is this option located? im running cloud software...

I'm told that in the current version there aren't possible to rebuild thumbnails. I hope it will be added soon.

Yes, it would be nice for a new theme design and new size configuration.

sounds like a downgrade.

I can happily confirm that in 4.1.5 it's possible to rebuild images! Well done!  

Great news!