Broken bundles after upgrade to 1.2.0

[darkalor]

After getting an update from 1.1.0 to 1.2.0 our babel bundle is not being transpiled correctly.
Note that we're using babel 6.26.

Output with 1.1.0

/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";
	
	var _isExtensible = __webpack_require__(1);
	
	var _isExtensible2 = _interopRequireDefault(_isExtensible);
	
	var _keys = __webpack_require__(2);
	
	var _keys2 = _interopRequireDefault(_keys);
	
	var _typeof2 = __webpack_require__(3);
	
	var _typeof3 = _interopRequireDefault(_typeof2);
	
	var _defineProperty = __webpack_require__(4);
	
	var _defineProperty2 = _interopRequireDefault(_defineProperty);
	
	var _create = __webpack_require__(5);
	
	var _create2 = _interopRequireDefault(_create);
	
	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
	
	var testsContext = __webpack_require__(6);
	
	var runnable = _get__("testsContext").keys();
	
	_get__("runnable").forEach(_get__("testsContext"));

Output with 1.2.0, note the import statements that were not transpiled

/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
	"use strict";
	
	import _Object$isExtensible from "babel-runtime/core-js/object/is-extensible";
	import _Object$keys from "babel-runtime/core-js/object/keys";
	import _typeof from "babel-runtime/helpers/typeof";
	import _Object$defineProperty from "babel-runtime/core-js/object/define-property";
	import _Object$create from "babel-runtime/core-js/object/create";
	
	var testsContext = __webpack_require__(1);
	
	var runnable = _get__("testsContext").keys();
	
	_get__("runnable").forEach(_get__("testsContext"));
	

[mooreInteractive]

Same. Babel 6.26, had to revert to rewire 1.1.0.