Keep important comments feature doesn't work for comments inside declaration block

[denistrator]

Input

/* test */
/*! test */
.test {
    /* test */
    /*! test */
    color: #111;
    background-color: #fff;
}

Expected output

/*! test */
.test{/*! test */ color:#111;background-color:#fff}

Actual output

/*! test */
.test{color:#111;background-color:#fff}