On special occasions, multiple Torah portions are read in a given service ie. Mishpatim and Shekalim. When multiple Sifrei Torah are available, a different Sefer is used for each portion, and each Sefer is formally closed with Hagba and Gelila before the next Sefer is opened and read from.
If only 1 Sefer Torah is available and multiple portions are to be read from different sections which will require rolling, do we do Hagba before rolling the Sefer to the next portion of laining?