R version 4.4.0 RC (2024-04-16 r86468 ucrt) -- "Puppy Cup"
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> library(Amelia)
Loading required package: Rcpp
## 
## Amelia II: Multiple Imputation
## (Version 1.8.2, built: 2024-04-10)
## Copyright (C) 2005-2024 James Honaker, Gary King and Matthew Blackwell
## Refer to http://gking.harvard.edu/amelia/ for more information
## 
> data(africa)
> af2 <- na.omit(africa)
> 
> oi <- matrix(c(1:10,rep(4, 10)), nrow = 10)
> 
> a.out <- amelia(af2, cs = 2, overimp = oi)
-- Imputation 1 --

  1  2  3

-- Imputation 2 --

  1  2  3

-- Imputation 3 --

  1  2  3

-- Imputation 4 --

  1  2  3

-- Imputation 5 --

  1  2  3

> 
> if (a.out$imputations[[1]][1,4] == a.out$imputations[[2]][1,4]) {
+   stop("overimp is broken")
+ }
> 
> proc.time()
   user  system elapsed 
   0.21    0.09    0.29