I was working with a large data set that had data for roads, rivers, railways, etc. all together so I decided to break the different data out so I could label it differently on the map and check each on and off separately. I selected all of one type, copied it to the clipboard, and pasted it as a new memory vector layer. Everything was working fine yesterday, but when I opened the file this morning all of the data in the attribute table was gone in the vector memory layers I created.
I had toggled off edits and saved all my layers before closing yesterday. Why did this happen? Should I have pasted as just a vector layer instead or should I have saved my selections as separate shapefiles instead?
Also, another issue I am experiencing is that I have several separate shapefiles with different address points. I was copying and pasting points between shapefiles yesterday without issue (they are the same formatting in the attribute table btw) but when I tried to do that this morning I could paste, but not save the shapefiles. I was getting the following error message:
Errors: ERROR: 1 feature(s) not added.
Provider errors: OGR error creating feature -2: Attempt to write non-point (MULTIPOINT) geometry to point shapefile.
Why was this working yesterday and not today? Did I somehow change the type of shapefile (i.e point, line polygon) without realizing it?
I am using QGIS 2.4.0-Chugiak.