Yes - as long as you enter it!
When you calculate one year, the data moves into the next year's Opening Tab automatically. If you are working with multiple tax years' worth of data, make sure you calculate every year with data and then every year after that, even if the year has no data. This will push all of the data to the most current tax year's Opening Tab.
For example, if you added some trading data to 2017, click the "Calculate" button to calculate the capital gains and losses on those transactions. The remaining crypto and the cost basis information will be moved to the 2018 Opening Tab. In order to get that data to 2019, you need to click the "Calculate" button in the 2019 tax year, and that will again move everything to the 2020 tax year.
*The "import from [previous tax year]" button is unnecessary when you are following the above steps. Any time you add new data to a tax year, you should re-calculate that tax year and any subsequent tax years. This will ensure that the current tax year has all of the proper data from previous tax years.