You’ll have to use the Switch sequel to upload courses.
You’ll need to proceed onward from the first Super Mario Maker in the event that you need to make maps. Nintendo has cautioned that course transfers will at this point don’t work for the Wii U game as of March 31st, 2021.
In the event that you need to make a strangely troublesome level or in any case share courses with your companions, you’ll need to utilize Super Mario Maker 2 on the Switch. Nintendo didn’t clarify why it was twisting things down. You can in any case play courses after the cutoff, however, the game will plainly lose some worth when you can’t impart your manifestations to any other person. It is anything but an amazing move, at any rate. The Wii U wasn’t close to as fruitful as the Switch has been, and may have restricted the crowd for SMM even in the game’s 2015 prime, not to mention five years after the fact.
It very well may be expensive for Nintendo to keep up workers for a game that isn’t getting a lot of utilization, particularly when a large number of those fans may have jumped to the Switch-based continuation.