1. A computer-implemented method for performing process instance migration between a source workflow environment and a target workflow environment, the computer-implemented method comprising: a server computing system, exporting, via a source engine, by one or more processors, process models of a source workflow environment to a target workflow environment; the server computing system, migrating, via the source engine, by the one or more processors, process instances from the source workflow environment to the target workflow environment; if a jump function of the target workflow environment is restricted to an activity sequence, a target computing system of the target workflow environment, adjusting, via a target source engine, by one or more processors, the exported process models, wherein adjustment of the exported process models includes inclusion of wait activities of the target workflow environment, at beginning of a branch of activities; the target computing system, initializing, via the target source engine, by the one or more processors, another process instance, from the exported process models in the target workflow environment; the target computing system, setting, via the target source engine, by the one or more processors, instance variables of the target workflow environment, wherein the instance variables are set from source instance data of the source workflow environment; and the target computing system, applying, via the target source engine, by the one or more processors, jumps to an end sequence of branch of activities, until a position of the exported process model is reached in the source workflow environment.