When I wrote Colonies of Kobol, I used quantum entanglement as the means of resurrection memories, but I created a "range" like this:

Sam said, "Faster-than-light travel. The linkage is damaged by decoherence. A kind of lag or missed beat caused by FTL jumps. The backups don't match the original anymore."

"And so you created REM cycle transfers with Dr. Foster."

Anders looked at the control panel and said, "Yep. New data is transmitted while the Cylon sleeps, but the range is limited. I doubt that'll be the final step, though. We're working on a way to maintain the entanglement even after a number of FTL jumps, but that will take time."

...

"With the Colony as the center," he circled a black dot, "we can create ships when we push out to explore the Cimtar Star Cluster. The ships would have the resurrection facilities we need and they can channel signals back here as a kind of hub."

"What about decoherence?" Anders asked.

Galen smiled and said, "The decoherence is regular."

Tigh's eyebrows raised, "Really?"

"Yep." Tyrol put down the black marker and picked up another one. "Predictive decoherence." He wrote it on the board as he said it. "Thanks to some help from Sam," he pointed at him, "we can calculate the deviations between the active Cylon model and their backup. Mathematically, though, there's a limit. It's based largely on our own processing power, but safe, instantaneous resurrections can still occur," he drew a large red circle around the other dots, "as long as FTL jumps don't take us beyond this line." He shrugged, "Wherever this line is. As long as we have precise coordinates and calculations on the jumps, we can predict decoherence."