The answer is, we do not know where he was following his resignation, most likely at home, there is a 15 month span between his resignation and the muster which records the date of his resignation.
John A. Dollins, Company K, 44th Consolidated Tennessee Infantry, "Appears on a Roster of the 44th Regiment of Tennessee Volunteers; originally in Wood's Brigade to July, 1862, when transferred to Johnson's Brigade.
Roster dated July 1864 [Note - This is July 1864]
Date of entry of muster into State service December 1861
Date of entry of muster into Confederate service December 1861
Date of rank, appointed, April 18, 1862
Date and cause of vacancy, Resigned April 18, 1863
[there is no other data found on this card]
According to a War Department memo, ca June 1909, only one muster roll for the 44th Consolidated Tennessee Infantry was found, that being for the period November - December 1864 period,