I did my keeping in touch day in November, due back at work in January.
I was expecting payment for my keeping in touch day, and hr said I should do it before I go back on the payroll as a maternity leave returner.
But it turns out they just put me on the payroll from that date, and used my accrued holiday as the reason. So in a way I came into work on my holiday day. So they either owe me one day's pay or one day's holiday.
I'm no expert but if you'd been off for a year or less to January I don't think they can unilaterally decide to end your mat leave and put you on annual leave. That sounds really awful if I haven't got the wrong end of the stick.