You must make multiple backups from your seed + print it out and store it in a secure place. SEED is the most important part of your Waves Wallet besides the Waves+Assets you are holding in it, of course. 
I saved the seed words. I can get back to the same address, at least, each time regenerating the wallet. I am mainly pointing out that other wallets for other coins don't need to be regenerated every time, regardless of browser settings.
EDIT:
I finally got it working better after managing extensions in Chrome and getting the app to create a desktop link. That and/or adding an exception in Chrome helped. Now it seems to remember, but it was a nuisance getting to this point.