do tokens carry between rounds, on an account?

Sorry but can u plz exaggerate more what u want to ask

sorry, i play a similar game which uses rounds instead of eras.

so to clarify:

if i have 50 tokens at the end of an era, on, say, earth 4, what happens when i go to the next era on earth 4 with the same account? do i keep the 50 remaining tokens from last round?

yes