Moving Packrat between different R versions with incompatible packages, and dealing with archived packages.

I'm facing two problems with Packrat currently, for a project I moved from a machine with R 3.3 to one with 3.2.

First the output of status():

packrat::status()

The following packages are referenced in your code, but are not present
in your library nor in packrat:

    RSofia
    actuar
    e1071

You will need to install these packages manually, then use
packrat::snapshot() to record these packages in packrat.

The following packages have been updated in your library, but have not been recorded in packrat:
                    library   packrat
    Ckmeans.1d.dp     3.4.6        NA
    car              2.0-20        NA
    caret            6.0-70        NA
    doMC              1.3.4        NA
    nlme            3.1-128        NA
    xgboost           0.4-4        NA
    zoo              1.7-13        NA

Use packrat::snapshot() to record these packages in packrat.
Warning messages:
1: In FUN(X[[i]], ...) :
  Package 'actuar' not available in repository or locally
2: In FUN(X[[i]], ...) :
  Package 'RSofia' not available in repository or locally

RSofia and actuar are the main problems here.

RSofia has been archived and I can install it, but I'm getting some connection errors.

actuar is not available for R 3.2, so there's no way for me to install it. I've tried removing it from the packrat.lock file but the error remains.

Is there a way for me to "purge" these packages so packrat no longer cares if they are installed or not?

When I try clean("actuar", force = TRUE) I get Error in find.package(pkgs, lib) : there is no package called ‘actuar’

Reproduce the reported status() and clean("actuar", force = TRUE) behavior in a project using the referenced packrat.lock. Start by examining how packrat handles unavailable or archived packages and edited lockfile entries; done when the intended purge behavior is clear and status() no longer reports the removed package.