update.html.twig

                                <% if(!stepFrom || stepFrom.get('name')) {
                                var stepFromName = stepFrom ? stepFrom.get('name') : '';
                                %>
                                <div class="control-group">
                                    {{ _self.render_label("oro.workflow.form.from_step.label"|trans, true, "oro.workflow.workflowdefinition.transition.step_from.tooltip") }}
                                    <div class="controls">
                                        <select name="step_from" data-validation="{{ requiredConstraint|json_encode }}"
                                        <% if (name && !_is_clone) { %>disabled="disabled"<% } %>
                                        >
                                        <option value=""></option>
                                        <% _.each(allowedStepsFrom, function (step) { %>
                                        <option
                                            value="<%- step.get('name') %>"
                                            <% if (step.get('name') == stepFromName) { %>selected="selected"<% } %>
                                        >
                                            <%- step.get('label') %>
                                        </option>
                                        <% }); %>
                                        </select>
                                    </div>
                                </div>
                                <% } %>
                                <div class="control-group">
                                    {{ _self.render_label("oro.workflow.form.to_step.label"|trans, true, "oro.workflow.workflowdefinition.transition.step_to.tooltip") }}
                                    <div class="controls">
                                        <select name="step_to" data-validation="{{ requiredConstraint|json_encode }}">
                                            <option value=""></option>
                                                <% _.each(allowedStepsTo, function (step) { %>
                                            <option
                                                value="<%- step.get('name') %>"
                                                <% if (step.get('name') == step_to) { %>selected="selected"<% } %>
                                            >
                                                <%- step.get('label') %>
                                            </option>
                                            <% }); %>
                                        </select>
                                    </div>
                                </div>