The GOS Contacts app does have Import functionality.
Open the Contacts app, tap the three horizontal bars on the top left corner, tap the Settings option.
"Import" is the 4th option up from the bottom.
Tested on build 2024103100.
taemex
Your inconvenience is self-inflicted.
Next time - slow down, do proactive backups of your important data in advance, and ask questions from the community to clarify your understanding before messing around with risky duress wipe features. Folks here are happy to help with polite questions.