Hello,
before anything, I'm very new to fonts. That being said I need to create a font file filled with various icons like WC or entrance icons.

As I wrote in subject, the program I'm using for creating the fonts files is Fontforge. The icons are being created in Adobe Illustrator.

I always create one version where the picture on the icon is transparent (Like WC in the toilet icon for example) and background is black. And then other one that's exact opposite of the first version - all is transparent except for the icon.

I've been using the same method for all the icons (open PDF, trace the icon, cut the unnecesarry space on the sides via the artboard tool, delete desired parts so that I make it transparent where needed and save as SVG. Then import into FontForge).

For most of the icons it worked just fine. But with some I ran into problems - empty spaces that should be there are suddenly filled when imported into FF or the icon spontaneously moves lower than the other icons (the goal is that when done, if you put both versions of the same icon exactly ontop each other, there would be no transparent spots. The inner icon would fill the outer one).

If anyone has any idea what could be causing this and would be willing to help, it would be greatly appreciated.

https://www.youtube.com/watch?v=n24NyYStHls

Thanks for the quick reply!

I tried what was said in the video and for some reason my FF didnt even allow me to do that.

But, it turns out I had some mess under these icons, that I have no idea how it got there (and was impossible to spot until I tried to move the whole thing). Perhaps some side product of the method I was using. So I tried deleting these residual lines and points, move the icon back it its place and voila, suddenly it works. Either way, if you come across this problem, this is how I solved it. Could be obvious to more advanced font creators but to me it took quite a while.