Default EFS Question

I restored a back up today using TWRP recovery and I had EFS checked although I should have had it unchecked because there's nothing wrong with my EFS. Everything works but my question is this;
Does the information in that folder ever change on its own? I would assume that it's read only and it doesn't change

Samsung Galaxy SIV
Graviton Rom
AusDim Kernel
Device: Samsung Galaxy SIV I337
ROM: Open Source Evolution (OSE)
Kernel: CPA POKE 1.7
Modem: NB1