Implemented save in case switch to complex #684

All 775 tests pass in 15s

    2 files ±0     2 suites ±0 15s ⏱️ ±0s
775 tests ±0 775 ✔️ ±0 0 💤 ±0 0 ❌ ±0
778 runs ±0 778 ✔️ ±0 0 💤 ±0 0 ❌ ±0

Results for commit ea5c147. ± Comparison against earlier commit 7a34800.