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Apples response We understand that you are having issues with your type definition for .gpx files. At this time, there is no commonly-accepted Uniform Type Identifier for .gpx files and different developers have defined their .gpx declaration differently. This means that if two apps are installed on the same device that claim to open these files with different definitions, they won't interact correctly: from the user's point of view, only one of those apps, chosen seemingly at random, will be able to open these files. Our understanding is that this format was designed by Topografix, so our current recommendation is that you redeclare support for .gpx files in your app by adding a type declaration for com.topografix.gpx that conforms to public.data and has the filename extension tag gpx. An example declaration is shown here: UTImportedTypeDeclarationsUTTypeIdentifiercom.topografix.gpxUTTypeReferenceURLhttps://www.topografix.com/gpx.aspUTTypeConformsTopublic.dataUTTypeTagSpecificationpublic.filename-extensiongpx Apple does not generally declare Uniform Type Identifiers for file types the operating system does not natively support, so this is a change that you will need to make. If you and other developers standardize on this Uniform Type Identifier, users on iOS 13 should see these apps appear in UIActivityViewController and other relevant UI locations. Such a change will also benefit users still running iOS 12 and earlier if they have multiple apps installed that can handle this file format. For more information about declaring Uniform Type Identifiers, see our documentation here: https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/understanding_utis/understand_utis_declare/understand_utis_declare.html While making this change in your app will not immediately fix the problem, it is a step in the right direction as other developers adopt this UTI.

We are waiting on a response on this issue as we too import gpx and MBTile. Hopefully this gets resolved soon. From what we see it is totally random in that we can delete and reinstall the app and get different results. Sometimes we will show up as an import option, sometimes we won’t but if imported into Files first then sometimes we will show up in there and sometimes not. Only work around we found is to compress (.zip) the file then we show up and it can be imported. From the looks of it a fair number of gps apps are having this issue as I have them loaded and they no longer show up as an option. We’re not alone Apple. Kill this bug! Damian LEADNAV GPS

We have been having this issue as well. Can load every page except sales and trends on our iPhones in safari