It means what it says. This is asking (a) too much (b) the wrong thing.
You should impute first, then -bootstrap-. All caveats one can think of,
and more, no doubt apply. 
Nick 
[email protected] 
Xu, Haiyong
Could somebody let me know if I can use mim to combine the bootstrap
results using the imputed data? When I was running the following codes,
mim, noi: bootstrap: regress science ses female math
It gives me an error message of "prefix bootstrap not allowed after
mim".
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