vacuums may remember information

[Flint]

How the Universe Remembers Information

Basically relativity doesn't completely flatten out gravity in the far distance from objects, it maintains information, even in a vacuum, meaning, maybe--

..if the vacuum can assume multiple forms, it will retain an almost homeopathic imprint of what passes through it..

--and this may be the mechanism whereby the information about what is consumed by a black hole continues to exist, even after the black hole itself bleeds out from Hawking Radiation and ceases to exist.

They are still working on demonstrating these concepts experimentally.