This makes sense to me. Usually, imports from one tool to another are flawed. Not because the import code is bad, but because different tools have different capabilities. In most cases (e.g. vector graphics, DTP) I either recreated the original data in the new tool (+improvements, while I am at it) or I did an “import light” where I imported the most portable and standardized parts only and added the rest manually (e.g. ex/import the text as .docx but recreate the layout). Fitting candidates for an “import light” in UI-Design applications might be assets like images, text styles and color pallets.
