Just do a clean shutdown, take your 32gb sd card and create a image of it with the help of usbimager (need to get the full version from gitlab and not the “write only” lite version from the website). 
Then just write the image back to your 64gb sd card. 
Last step is probably (if Ha doesn’t do that automagically? 
) to raise the the data partition to the full size of the sd card (but technically there is actually no need if you don’t need the space). As we are on flash storage the internal controller decides which cells to be written so you will benefit from the over provisioning in any way. 
And for your new “durable” sd card you probably were successfully tricked by the industry. Often they just repeat what is true for other (including “standard”) sd cards too, like being shockproof, waterproof and x-ray proof. 
Some sd card manufactures that give 10/15 years or even life time (limited) guarantees usually exclude use cases not described and that typically always includes scenarios with a high random IO with little sequential writes (for example running HaOS) 
The label you are gonna aiming for on your sd card is “A2” - the rest is normally of no importance (including the marketing labels “pro endurance” etc.). Beside over provisioning (aka buy bigger cards then you need) can prolong the life of your card. 
For more information on that topic you can consult this posts/thread 