In the quotes you have collected about Magadh desh, only this one speaks about Magadh desh in a symbolic way as an epithet or byword.
1)SM 23-5-81(1):- Shiv Jayanti bhi yahaan manaayi jaati hai. Yahaan magadh desh may hee janm liya hai. Baap kahte hain yah Bharat desh bahut pavitr swarg thaa. ABHI INKO MAGADH DESH KAHA JATA HAI. PHIR SWARG BAN_NAA HAI.
= Shiv Jayanti is celebrated here. (Shiv) has taken birth here in magadh desh itself. Father says this Bharat?India country was very pure, heaven. NOW, THIS IS CALLED AS MAGADH DESH. This will later become heaven.
Only here...after the now.
As for the rest, even in the same quote....Here, in Magadh desh itself....it is clear it speaks about a place within India. Same as with the quote below. In India....Where? It means where in India. In India, in Magadh desh. Same with the quote from the audio. In India...and that in Magadh desh, referring to a place within India. Whole India is also not known as land of crocodiles, but the area around Ganga, who rides a crocodile.
4)SM 29-7-77(2):- Vaastav may Bharat toh sabkaa badaa teerth hai. Sabki sadgatai karnevaalaa jo Baap hai, unkaa janm yahaan Bharat may hotaa hai. Kahaan? VAH BHI LIKHAA HUVAA HAI MAGADH DESH MAY. Abhi tumko pataa padaa hai Baap kaise Bharat desh may aate hain. Ab kounsaa teerth sthaan oonch maanenge? Zaroor Bharat ko hi maan_naa padey. Shiv ke mandir toh jahaan tahaan hai. SAB DHARMVAALEY JAHAAN BHI Shiv KAA MANDIR DEKHENGE, TOH JAAKAR ShivBaba PAR HAAR CHADHAAVENGE. AGAR JAAN JAAVE KI ShivBaba HI HAI JISNEY HUM SABKI SADGATI KI HAI. -43- [magadh, Gita, mandir]
= Actually Bharat is highest pilgrimage. Father takes birth in India. Where? That is also written as Magadh. Now, you know how Father comes in India....
I don't fully agree with your translation. There is no “as”. It becomes misguiding like this that Bharat is written as Magadh desh. No. The original meaning is....even this is written. (it is written where in Bharat...refer to the previous...where?)...in Magad desh.
Yes, Dwarka is for heaven, because it is famous from the scriptures as the land of Krishna. Scientists even today search fro Dwarika by the shores of Gujarat and they claim they have found it under the sea. They also claim that there is a bridge between India and Shri Lanka, Ram used.
Baba does use Lanka as epithet for hell, Ravan's kindom and Dwarika as heaven, kingdom of Krishna, so whose kingdom is Magadh?
There are many references in the Murlis about Farukhabad that people believe in the Master there.