Sue, it'll work to do the increase in the back of the adjacent stitch in place of the lifted strand. it's not what the pattern may be calling for but I often do this substitution myself. The important thing is to keep track of the increase and the stitch that follows. They're separate. The stitch worked into the back loop is the increase and knitting the next loop on the left needle counts as a knit one.
These increases are easier to count if you lift the strand between sts because you're so clearly between two sts but just keep track of the stitches and you'll be ok.