u/gijafonos

I just bought a new analogue pocket and I was reading a couple of old posts about the loss of save data on original cartridges and it has me worried. I have EXTENSIVE decade old progress on multiple Pokemon cartridges for the gameboy advance and now that I’m reading about the use of sleep mode possibly ruining the save files themselves and or the real time clock functionality I’m a bit off put from it. Has this truly been fixed in the latest firmware patches? Any advice would be appreciated thank you!